Not Your Parents’ Pot: Cannabis Is More Potent Now

By Dr. Ty Schepis

Eventually, most adults reach a point where we realize we are out of touch with those much younger than us.

Perhaps it is a pop culture reference that sparks the realization. For me, this moment happened when I was in my late 20s and working with adolescents in school settings to help them quit smoking. When other drugs would occasionally come up, I didn’t understand some of the slang terms they used for these drugs. Many people may have that feeling now when the topic of cannabis comes up – especially in its different and newer forms.

As a professor of psychology, I focus my research on substance use in adolescents and young adults. A major change during my time in research is the legalization and explosion of cannabis availability across the U.S.

There are arguments for and against increasing legalization of cannabis for adult use in the U.S., but expanded access to legal cannabis also may have unintended consequences for adolescents. These consequences are compounded by the increasing potency of some cannabis products.

I use the word “cannabis” since it refers to the plant from which the drugs are derived. It also serves as a catch-all term for any substance with chemical compounds from cannabis plants and addresses concerns that the word marijuana has some long-standing racist overtones.

Cannabis now comes in a larger variety of forms than it used to. When most people over 40 think of cannabis, they imagine its dried form for smoking. This cannabis was not particularly strong: The average THC concentration of cannabis seized by the Drug Enforcement Agency in 1995 was 4%, while it was roughly 15% in 2021.

In addition to the smoked form, some might remember an edible form, often baked into a dessert like a brownie, or hashish, which is derived from more potent parts of the cannabis plant.

Today there are many different cannabis concentrates that have high levels of THC, typically ranging from 40% to 70%, and more than 80% in some cases, depending on the method of extraction. These include oils that can be vaporized by vape or dab pens, waxier substances and even powders.

Differences in Cannabis Products

THC and cannabidiol, or CBD, are the most common chemicals in cannabis. Each one interacts with the brain in different ways, producing different perceived effects.

CBD does not produce the same “high” that THC does, and cannabidiol may have benefits as a medication for severe epilepsy, as well as other potential but as yet unproven medical uses. The differences between THC and CBD come from how they interact with cannabinoid receptors – the proteins onto which these drugs attach – in the brain and body.

However, CBD can also make people sleepy, alter mood in unintended ways and cause stomach upset. Never use a CBD product without consulting a physician.

THC is the chemical most strongly associated with the high from cannabis. By increasing the amount of THC, concentrated products can increase blood levels of THC rapidly and more strongly than nonconcentrates such as traditional smoked cannabis.

Cannabis concentrates also come in many different forms that range from waxy or creamy to hard and brittle. They are made in a variety of ways that may require dry ice, water or flammable solvents such as butane.

The myriad names for cannabis concentrates can be confusing. Concentrate names include “budder,” which refers to a yellowish paste like frosting; “shatter” is made similarly to budder but comes in a thin, brittle and translucent form; there’s also “wax” or “crumble,” which confusingly is not waxy but is more like a powdery or grainy substance; and “keef” or “kief,” which is powdery in nature and derived from the most potent parts of the cannabis plant. It is similar to hashish.

The names change regularly and can vary by guide or from person to person. It is best to ask what a term means from an open and curious place than to act as if you know all the terminology.

Many concentrates are vaporized and inhaled. Vaporizing is different than smoking, as vaporizing heats the concentrate until it becomes a gas, which is inhaled. Smoking involves burning the compound to produce an inhaled gas.

Many who vaporize concentrates call it “dabbing.” This refers to the dab of concentrate to heat, vaporize and inhale. Another way to vaporize cannabis concentrates is to use a vape pen. Vape pens are sometimes also called dab pens, depending on the local terms.

Cannabis and Adolescents

One of the reasons why young people are drawn to these sorts of products is that vaping or dabbing the concentrated form makes it easier to hide cannabis use. Vaping cannabis does not create the typical smell associated with weed.

A 2021 systematic review found that past-year cannabis vaping nearly doubled from 2017 to 2020 in adolescents - jumping from 7.2% to 13.2%. A more recent study in five northeastern U.S. states found that 12.8% of adolescents vaped cannabis in the past 30 days, a more narrow time frame that suggests potential increases in use. In addition, a 2020 study found that one-third of adolescents who vape do so with cannabis concentrates.

Cannabis use by adolescents is scary because it can alter the way their brains develop. Research shows that the brains of adolescents who use cannabis are less primed to change in response to new experiences, which is a key part of adolescent development. Adolescents who use cannabis are also more likely to experience symptoms of schizophrenia, struggle more in school and engage in other risky behaviors.

The risks of cannabis use are even greater with concentrates because of the high levels of THC. This is true for both adolescents and adults, with greater risk for symptoms of schizophrenia such as hallucinations and delusions, mental health symptoms and more severe cannabis use.

The best analogy is with another drug – alcohol. Most people know that a 12-ounce beer is much less potent than 12 ounces of vodka. Cannabis in smoked form is closer to the beer, while a concentrate is more like the vodka. Neither is safe for an adolescent, but one is even more dangerous.

These dangers make early conversations with kids about cannabis and cannabis concentrates critically important. Research consistently shows that expressing disapproval of drug use makes adolescents less likely to start drug use.

Start these conversations early – ideally before middle school. You can find some helpful online resources to guide the conversation.

While these conversations can be uncomfortable, and you can look like the out-of-touch adult, they can be a major step toward preventing adolescents from using cannabis and other drugs.

Ty Schepis, PhD, is a Professor of Clinical Psychology at Texas State University. His research receives funding from the Food and Drug Administration and the National Institute on Drug Abuse.

This article originally appeared in The Conversation and is republished with permission.

Smoking Marijuana More Effective Than CBD Extracts for Back Pain

By Pat Anson, PNN Editor

One of the reasons many medical marijuana users prefer edibles over smoking is that they are perceived as healthier.  Marijuana smoke contains many of the same chemicals and carcinogens as cigarette smoke, and could have harmful effects on people with respiratory or cardiovascular problems.

But a small new study conducted in Israel found that smoking marijuana is better than ingesting it, at least when it comes to treating chronic lower back pain. Researchers enrolled 24 adults with MRI or CT scans that showed evidence of disc herniation or spinal stenosis, and had them try two different types of cannabis treatment.

The first was a cannabis extract rich in cannabidiol (CBD), which was taken sublingually under the tongue daily for 10 months. After a month of no treatment, the same group smoked cannabis flowers rich in tetrahydrocannabinol (THC) up to four times a day for 12 months. Participants were allowed to take pain medication as needed, including oxycodone and acetaminophen.

The study findings, published in the Rambam Maimonides Medical Journal, showed there was little to no improvement in back pain when participants took the extract, but significant improvement when they smoked cannabis. The use of analgesic drugs also dropped significantly while smoking.

Notably, three patients dropped out of the extract phase of the study because it wasn’t helping them, but then returned to participate in the smoking phase.

“The current study is the first, to our knowledge, to indicate that THC-rich smoked therapy is more advantageous in ameliorating LBP (lower back pain), than low THC CBD-rich sublingual extracts. Despite the small number of patients, our data indicate that THC-rich smoked therapy is helpful in mitigating LBP,” researchers reported.

The most commonly reported adverse events during the study were nausea, dizziness, drowsiness and fatigue during the extract phase; sore throat and drowsiness were reported during the smoking phase. All of the adverse symptoms disappeared after a dose tolerance was reached. Most of the adverse effects were in female patients.

A 2019 study of medical marijuana users also found that smoking cannabis provided more pain relief than ingesting it. Over 3,300 people logged their symptoms on a mobile app while using a variety of cannabis products, including dried flower, edibles, tinctures and ointments. Smoking the dried flower provided more pain relief than any other cannabis product, regardless of the amount of THC.

Another problem with CBD edibles is that they are frequently mislabeled. A recent study of 80 CBD oils found that only 43 had concentrations of cannabidiols that were within 10% of their label claims – an accuracy rate of just 54 percent.

Smoking Cannabis Improves Energy Levels

By Pat Anson, PNN Editor

People who frequently smoke marijuana are often portrayed in popular culture as unmotivated, low-energy slackers who spend much of their time laying in bed or bound to a couch. That stereotype of the “lazy stoner” is not only unfair – it’s inaccurate according to a new study of cannabis consumers.

In an analysis of self-reported data from people who smoked or vaporized cannabis flower to treat fatigue, researchers at the University of New Mexico found that over 91 percent reported higher energy levels soon after consuming cannabis.

"Despite the conventional beliefs that frequent cannabis use may result in decreased behavioral activity, goal-pursuit, and competitiveness, or what academics have called 'amotivational syndrome,' people tend to actually experience an immediate boost in their energy levels immediately after consuming cannabis," said co-author Jacob Miguel Vigil, PhD, a psychology professor at UNM.

The study findings, published in the journal Medical Cannabis and Cannabinoids, are the latest derived from the Releaf App, a free mobile software program that collects self-reported, real-time information from people on their use of cannabis and its effect on chronic pain, insomnia, anxiety and other medical conditions.

Fatigue is a core symptom of many chronic illnesses, including fibromyalgia, immune system disorders and myalgic encephalomyelitis, also known as chronic fatigue syndrome (ME/CFS).

The UNM study is based on data from 3,922 cannabis sessions recorded by 1,224 people who used the Releaf app to monitor real-time changes in their symptoms and side effects.

Researchers found that people who smoked cannabis joints experienced higher energy levels than those who used a vaporizer or pipe. Surprisingly, tetrahydrocannabinol (THC) and cannabidiol (CBD) levels in the cannabis appeared to have no correlation with energy and fatigue levels. The strain of cannabis used also made little difference.     

"One of the most surprising outcomes of this study is that cannabis, in general, yielded improvements in symptoms of fatigue, rather than just a subset of products, such as those with higher THC or CBD levels or products characterized as sativa rather than indica," said co-author Sarah Stith, PhD, an economics professor at UNM.

“Our observation that the major cannabinoids tetrahydrocannabinol and cannabidiol were largely uncorrelated with changes in feelings of fatigue suggest that other minor cannabinoids and phytochemicals such as terpenes may be more influential on the effects of using cannabis than previously believed,” added Vigil.

Terpenes are aromatic compounds that give plants such as lavender and citrus their fragrance. In cannabis, terpenes have a distinctive “skunky” smell, but may be responsible for much more. Recent research found that terpenes appear to have an “entourage effect” on cannabinoids that boost their pain-relieving effects.   

“In the near future, I anticipate that patients will have the opportunity to access more individualized cannabis products, with distinct and known combinations of chemical profiles for treating their specific health needs and lifestyles," said Vigil.

In addition to boosting energy levels, researchers say cannabis helped most users feel more relaxed and peaceful. Negative side effects reported by a minority of users were dry mouth and feeling mentally foggy.   

Current and Former Smokers Have More Pain

By Pat Anson, PNN Editor

There are many good reasons to stop smoking. Within hours, your heart rate and blood pressure will drop, you’ll cough less and feel more energy. Within a few months your lung function will start to improve. And after 20 years, your risk of dying from lung disease or cancer will be about the same as someone who never touched a cigarette.

Unfortunately, one thing that may not improve is your pain. According to a large new study in the UK, former smokers report higher levels of pain than people who never smoked, and their pain levels are similar to people who still continue to smoke.

Researchers at University College London (UCL) analyzed health data from over 220,000 people in the UK who were asked to report how much pain they experienced during the previous 4 weeks and whether it interfered with their work.  

After adjusting for other health factors such as anxiety and depression, current and former daily smokers were more likely to report bodily pain compared to people who never smoked. The difference was small, but considered significant. Surprisingly, the association between smoking and pain was highest in the youngest group of smokers (aged 16 to 34).

The study was observational and did not establish a cause-and-effect relationship between smoking and pain. But researchers say their findings, published in the journal Addictive Behaviors, suggest that regular smoking at any age results in more pain.

“We cannot rule out that there is some other difference between former smokers and never smokers that is causing these surprising results, but we have to consider at least the possibility that a period of daily smoking at any time results in increased pain levels even after people have stopped smoking,” said lead author Olga Perski, PhD, a research associate in UCL’s Department of Behavioural Science & Health.

“This may be due to negative effects of smoking on the body’s hormonal feedback loops or undiagnosed damage to body tissues. This is certainly an issue that needs looking into.” 

Another possibility is differences in personality. People who take up smoking may handle the psychological stress of illness differently than non-smokers or have a lower level of pain tolerance, which makes them feel pain more acutely. A large study in Norway, for example, found that smokers and former smokers were more sensitive to pain than non-smokers, who had a higher pain tolerance.

Regardless of the reason, smoking is linked with many negative health consequences.

“The possibility that smoking may increase lifelong pain is another important reason not to take up smoking in the first place,” said Perski.

Studies have also found that smoking increases your chances of having several types of chronic pain conditions, such as degenerative disc disease.

A 2011 study of over 6,000 Kentucky women found that those who smoked had a greater chance of having fibromyalgia, sciatica, chronic neck pain, chronic back pain and joint pain than non-smokers. Women in the study who smoked daily more than doubled their odds of having chronic pain.

How Sodas and Smoking Worsen Disability

By Pat Anson, PNN Editor

Most doctors will tell you that smoking and drinking sweetened beverages like soda every day will lead to poor health. They can also worsen your risk of disability if you have rheumatoid arthritis or multiple sclerosis, according to new studies.

Researchers in Germany wanted to know how diet can affect the progression of multiple sclerosis (MS), a chronic disease that attacks the body’s central nervous system, causing numbness, difficulty walking, paralysis, loss of vision, fatigue and pain.  

They surveyed 135 MS patients to see how close their diet was to the Dietary Approaches to Stop Hypertension (DASH) diet – which limits foods that are high in saturated fat and sugar – and recommends whole grains, fruits and vegetables, low-fat dairy products, lean meats, poultry and fish, nuts and legumes.

Researchers did not find a link between what the participants ate and their level of disability, but there was a strong association with what they drank.

"While we did not find a link with overall diet, interestingly, we did find a link with those who drank sodas, flavored juices and sweetened teas and coffees," said study author Elisa Meier-Gerdingh, MD, of St. Josef Hospital in Bochum, Germany.

MS patients who consumed the largest amounts of sugar-sweetened beverages – averaging about 290 additional calories per day -- were five times more likely to have severe disability than people who rarely drank sweetened beverages.

"While these results need to be confirmed by larger studies that follow people over a long period of time, and the results do not show that soda and sugar-sweetened beverages cause more severe disability, we do know that sodas have no nutritional value and people with MS may want to consider reducing or eliminating them from their diet," said Meier-Gerdingh, who will present her findings at the American Academy of Neurology's annual meeting in Philadelphia in May.

Smoking Worsens Risk of Rheumatoid Arthritis

Previous studies have also found that smoking increases your chances of having MS and several other chronic pain conditions.

A new study by researchers at Brigham and Women's Hospital in Boston demonstrated for the first time that women who stop smoking can reduce their risk of developing the most severe form of rheumatoid arthritis (RA). But it takes time to have a beneficial effect.

"Ours is the first study to show that a behavior change can reduce risk for seropositive RA. Risk isn't just about genes and bad luck--there's a modifiable environmental component to the onset of this disease and a chance for some people to reduce their risk or even prevent RA," said corresponding author Jeffrey Sparks, MD, of the Division of Rheumatology, Immunology and Allergy at the Brigham.

Sparks and colleagues analyzed data from the Nurses' Health Study, which tracked the long-term health of registered nurses from across the U.S.  Brigham researchers identified over 1,500 nurses who developed RA, but they were most interested in those with "seropositive" RA as opposed to "seronegative" RA. Patients with seropositive RA generally have more severe joint deformities and disability.

For seropositive RA, the risk of disability began to go down about five years after women quit smoking and continued to decrease the longer they stayed non-smokers. Participants who quit for good reduced their risk of seropositive RA by 37 percent after 30 years. The team did not find any association between seronegative RA and smoking.

"One of the lessons here is that it takes sustained smoking cessation to reap the full benefit," said Sparks, who published his findings in the journal Arthritis Care & Research.

"Whereas for other diseases, such as cardiovascular disease, quitting smoking can provide a more immediate effect, here we're seeing benefits decades later for those who quit smoking permanently."

RA is a chronic autoimmune disease in which the body’s own defenses attack joint tissues, causing pain, inflammation and bone erosion. While the biological mechanisms that link smoking and the development of RA are unclear, Sparks believes that smoking may contribute to the formation of RA-related antibodies that increase inflammation.

In future studies, Brigham researchers want to extend their investigations to include men and to see if smoking cessation can prevent the formation of RA-related antibodies and stop progression of the disease.

Another Reason for Arthritis Patients to Quit Smoking

By Pat Anson, Editor

Rheumatoid arthritis sufferers who quit smoking can significantly reduce their risk of an early death, according to a British study published in the journal Arthritis Care and Research.

University of Manchester researchers studied a database of over 5,600 rheumatoid arthritis (RA) patients that included hospital admissions and death certificates. They found that the risk of death was almost two times higher in RA patients who smoked compared to those who never smoked.

The good news for smokers is that if they quit, the risk of death fell for each year they didn’t smoke. Former smokers have a risk similar to that of RA patients who had never smoked.

"This research provides important evidence that the risk of early death starts to decline in patients who stop smoking, and continues year on year,” said Deborah Symmons, Professor of Rheumatology and Musculoskeletal Epidemiology at The University of Manchester.

“We hope that this research can be used by public health professionals and rheumatologists to help more people quit smoking and reduce premature deaths, particularly for newly diagnosed patients with rheumatoid arthritis."

RA is a chronic autoimmune disease in which the body’s own defenses attack joint tissues, causing swelling, inflammation and bone erosion. Many health experts believe the inflammation triggered by RA in the joints may cause inflammation throughout the body, including the heart’s coronary arteries.

According to the Arthritis Foundation, more than 50 percent of premature deaths in people with rheumatoid arthritis result from cardiovascular disease. The heightened risk of heart disease applies to all forms of arthritis, including osteoarthritis, gout, lupus and psoriatic arthritis.

"Rheumatoid arthritis is a debilitating and painful condition affecting over 400,000 people in the UK, it can begin at any age and is unpredictable - one day you can feel fine and the next day be confined to bed, unable to get up to dress, even go to the toilet unaided,” said Stephen Simpson, Director of Research and Programmes for Arthritis Research UK.

"As a charity, we are committed to preventing, transforming and curing arthritis and musculoskeletal diseases, and this research shows that cutting out smoking is one intervention which can help this condition from developing."

There is already plenty of evidence to show an association between smoking and increased risk of death in the general population, but the habit is especially risky for chronic pain sufferers. Studies have found that smoking increases your chances of having several types of chronic pain conditions, such as degenerative disc disease.

A study of over 6,000 Kentucky women found that those who smoked had a greater chance of having fibromyalgia, sciatica, chronic neck pain, chronic back pain and joint pain than non-smokers. Women in the study who smoked daily more than doubled their odds of having chronic pain.

A large study in Norway found that smokers and former smokers were more sensitive to pain than non-smokers. Smokers had the lowest tolerance to pain, while men and women who had never smoked had the highest pain tolerance.

A recent study in Sweden published in JAMA Neurology found that smoking after a diagnosis of multiple sclerosis significantly accelerates progression of the disease.

Why Smoking is a Pain in the Neck

By Pat Anson, Editor

Need another reason to stop smoking? What if you knew it was causing that pain in your neck?

That’s the conclusion of a new study being presented this week at the annual meeting of the Association of Academic Physiatrists. In a study of 182 patients who were given CT scans,  researchers found that smokers were more likely to have cervical degenerative disc disease.

“This is another example of the detrimental effects of smoking. Tobacco abuse is associated with a variety of diseases and death, and there are lifestyle factors associated with chronic neck pain,” says lead investigator Mitchel Leavitt, MD, resident physician at Emory University’s Department of Physical Medicine and Rehabilitation.

“Pain and spine clinics are filled with patients who suffer chronic neck and back pain, and this study provides the physician with more ammunition to use when educating them about their need to quit smoking.”

The cervical spine is located in the neck and is made up of bones called vertebrae. Between these bones are cervical discs that absorb shock to the spine. Through the normal aging process, these discs slowly degenerate, which means they become dehydrated and shrink.

In some cases, the drying of the disc may cause cracks and tears, through which some of the jelly-like central portion of the disc may spill out and irritate local nerves. That can result in pain in the shoulders, arms, hands and fingers.

It isn’t only wear and tear that can damage these discs. Some unhealthy habits, such as smoking, can add to cervical disc degeneration.

“Smoking is not healthy for a person’s intervertebral discs given the risk of developing microvascular disease – a disease of the small blood vessels – due to nicotine abuse,” says Leavitt. “Intervertebral discs receive their nourishment from the microvasculature that line the endplates on either side of each disc; when these blood vessels are damaged, the discs do not receive nourishment and this may speed up the degenerative process.”

While smoking has been associated with degeneration in the lumbar spine, this was one of the first studies to make the association with the cervical spine.  The patients evaluated by Leavitt and his colleagues were mostly female (57 percent), and about a third were smokers. A radiologist and a physiatrist – a physician who specializes in physical medicine and rehabilitation – reviewed their CT scans for signs of cervical degenerative disc disease. The amount of damage was rated on a scale of zero to 15.

Current smokers were found to have more cervical degenerative disc disease and were given a "damage score" that was about one point higher, on average. Not surprisingly, researchers also found that aging was associated with worsening cervical degenerative disc disease, but diabetes, hypertension, high cholesterol and high BMI were not.

Leavitt believes more research is needed on other lifestyle factors, such as high fat diets, alcohol use and obesity to see how they relate to chronic back and neck pain.

“Virtually everyone knows that moderate exercise somewhere around four to five times per week is beneficial, plus other lifestyle factors like avoidance of smoking and a proper diet are equally important. However, these topics are usually geared towards heart health, lowering blood pressure, managing diabetes, or controlling other medical conditions, and not specific to the spine,” Leavitt said. “It is one thing to live to the age of 95, and it is another to live to 95 while retaining one's mobility and being free of pain. Lifestyle medicine will likely play a large role in the future of healthcare, and having plenty of data to support lifestyle management is critical.”

Previous studies have found that smoking increases your chances of having several types of chronic pain conditions.

A study of over 6,000 Kentucky women found that those who smoked had a greater chance of having fibromyalgia, sciatica, chronic neck pain, chronic back pain and joint pain than non-smokers. Women in the study who smoked daily more than doubled their odds of having chronic pain.

A large study in Norway found that smokers and former smokers were more sensitive to pain than non-smokers. Smokers had the lowest tolerance to pain, while men and women who had never smoked had the highest pain tolerance.

In a recent study published in JAMA Neurology, Swedish researchers reported that continuing to smoke after a diagnosis of multiple sclerosis significantly accelerates progression of the disease.

Smoking Accelerates Multiple Sclerosis

By Pat Anson, Editor

Smoking is never a good idea for anyone – especially people in chronic pain -- but according to a new study it is particularly bad for multiple sclerosis patients, both before and after diagnosis.

Cigarette smoking is already a known risk factor for developing multiple sclerosis (MS), but in a first of its kind study published in JAMA Neurology, Swedish researchers found that continuing to smoke after diagnosis significantly accelerates progression of the disease.

MS is a chronic and incurable disease which attacks the body’s central nervous system, causing numbness in the limbs, difficulty walking, paralysis, loss of vision, fatigue and pain. Symptoms begin with a series of irregular relapses, and after about 20 years MS worsens into a secondary progressive (SP) stage of the disease.

In a study of over 700 MS patients who continued to smoke after their diagnosis, researchers found that each additional year of smoking accelerated the time to SP conversion by 4.7 percent.  

Looking at it another way, the study found that patients who continued to smoke converted to SP faster (at an average age of 48) than those who quit smoking (at age 56).

“This study demonstrates that smoking after MS diagnosis has a negative impact on the progression of the disease, whereas reduced smoking may improve patient quality of life, with more years before the development of SP disease,” said lead author Jan Hillert, MD, Department of Clinical Neuroscience, Karolinska University Hospital Solna in Stockholm.

“Evidence clearly supports advising patients with MS who smoke to quit. Health care services for patients with MS should be organized to support such a lifestyle change.”

Getting MS patients to quit is important not only for patients, but for society as a whole because of the high cost of treating MS. Disease modifying drugs such as fingolimod and natalizumab, cost about $30,000 per year and are not always effective.

“This study adds to the important research demonstrating that smoking is an important modifiable risk factor in MS. Most importantly, it provides the first evidence, to our knowledge, that quitting smoking appears to delay onset of secondary progressive MS and provide protective benefit,”  said Myla Goldman, MD, of the University of Virginia, and Olaf Stüve, MD, of the University of Texas Southwestern Medical Center in an accompanying editorial in JAMA Neurology.

Previous studies have found that smoking increases your chances of having several types of chronic pain conditions.

A study of over 6,000 Kentucky women found that those who smoked had a greater chance of having fibromyalgia, sciatica, chronic neck pain, chronic back pain and joint pain than non-smokers. Women in the study who smoked daily more than doubled their odds of having chronic pain.

A large study in Norway found that smokers and former smokers were more sensitive to pain than non-smokers. Smokers had the lowest tolerance to pain, while men and women who had never smoked had the highest pain tolerance.

Smoking Linked to Longer Opioid Use

By Pat Anson, Editor

About one in five patients who are prescribed an opioid pain medication for the first time are still taking painkillers 90 days later, according to a small new study published in the Mayo Clinic Proceedings. Smokers and former smokers who were found to have the highest risk of using painkillers long-term.

Researchers at the Mayor Clinic studied a health database of residents in Olmsted County, Minnesota and identified 293 patients who were prescribed opioids in 2009. Nearly two-thirds were women who received their first opioid prescription after surgery, or some type of musculoskeletal pain or injury.

Most of the patients only needed one or two prescriptions and stopped taking pain medication. But 61 of them (21%) progressed to an “episodic” prescribing pattern in which they were still using opioids 90 days later. Nineteen patients (6%) were classified as “long term” users – which was defined as someone who had ten or more opioid prescriptions or at least 120 days of supply.

Women, Caucasians, people with a high school education or less, and patients with a history of depression or substance abuse had higher risks of long-term use.

But it was current or past smokers who stood out – nearly 74% of long-term opioid users had a history with tobacco. Nicotine is known to activate a group of nerve receptors in the brain, in a way very similar to how opioids and chronic pain activate them.

Researchers say the identification of potential risk factors like tobacco is an important tool for physicians, who should be careful about prescribing painkillers to patients with such histories.

“Before initiating a new opioid prescription, patients should be screened for past or current tobacco use and past or current substance abuse. This would allow the clinician to assess the risk of longer-term prescribing and would provide the opportunity to counsel the patient about these potential risk factors before actually receiving the initial prescription,” said lead author W. Michael Hooten, MD, a Mayo Clinic anesthesiologist.

"From a patient perspective, it is important to recognize the potential risks associated with these medications. I encourage use of alternative methods to manage pain, including non-opioid analgesics or other non-medication approaches. That reduces or even eliminates the risk of these medications transitioning to another problem that was never intended."

Not only does smoking raise the risk of longer opioid use, previous studies have shown it also increases your chances of having chronic pain.

A study of over 6,000 Kentucky women found that those who smoked had a greater chance of having fibromyalgia, sciatica, chronic neck pain, chronic back pain and joint pain than non-smokers. Women in the study who smoked daily more than doubled their odds of having chronic pain, while occasional smokers showed a 68% percent higher risk, and former smokers showed a 20% greater risk.

A large study in Norway found that smokers and former smokers were more sensitive to pain than non-smokers. Smokers had the lowest tolerance to pain, while men and women who had never smoked had the highest pain tolerance.

Depression and Obesity Raise Risk of Low Back Pain

By Pat Anson, Editor

Depression, obesity, smoking, and alcohol use significantly raise the risk of having low back pain, according to a large new study presented at the annual meeting of the American Academy of Orthopaedic Surgeons.

“The results were pretty surprising to us. We kind of expected to find a significant difference but not to that extent,” said lead study author and orthopedic surgeon Scott Shemory, MD.

Shemory and his colleagues at Summa Health and the Crystal Clinic Orthopedic Center in Akron, Ohio reviewed the health records of over 26 million patients from 13 health care systems in the U.S. Of those 26 million patients, 1.2 million were diagnosed with lower back pain.

Researchers then analyzed the records to see if the patients with low back pain had any of the four modifiable risk factors: obesity, depressive disorders, alcohol and tobacco use.

• 19.3% of low back pain patients were depressed
• 16.75% were obese with a body mass index (BMI) over 30
• 16.53% were nicotine dependent.
• 14.66% abused alcohol

The study did not address the “chicken and egg question” of which came first. Do depression and obesity cause low back pain, or does low back pain lead to depression, obesity and other risk factors?

“With our study there was no way to determine the cause and the effect or which came first because there was so much overlap,” Shemory told Pain News Network.

“Especially with alcohol abuse and depressive disorders. Anybody who’s got low back pain for years and years, I don’t think it would be surprising that they would have a higher chance of depression or alcohol abuse.”

Regardless of which came first, Shemory says patients should take steps to improve their health by eliminating risk factors that they can control.

“If a patient has any of these risk factors and has low back pain that doesn’t have a neurogenic cause, like a pinched nerve or something like that, I would be counseling them on trying to control these risk factors, not just for their general health but their back pain and livelihood as well,” he said.

According to the National Instituteof Neurological Disorders and Stroke, about 80 percent of adults experience low back pain at some point in their lives. It is the most common cause of job-related disability and a leading contributor to missed work days. One large survey found that over a quarter of adults reported having low back pain during the past 3 months.