Cigarette Type

Many people mix dagga and tobacco to save money and make inhalation more efficient. This practice, however, may increase the likelihood of users becoming dependent.

http://www.health24.com/Lifestyle/Street-drugs/Plants/mixing-pot-and-tobacco-increases-dependence-risk-20160707

People who mix marijuana with tobacco are at greater risk for dependency and less motivated to find support to quit these drugs, researchers report.

Cannabis less addictive

One billion people around the globe use tobacco and 182 million people smoke pot, making these two of the world’s most popular drugs, according to the World Health Organisation and the United Nations Office on Drugs and Crime.

Many people mix the two drugs together to save money. Tobacco also makes pot inhalation more efficient. This practice, however, may increase the likelihood that users become dependent, the researchers found.

“Cannabis dependence and tobacco dependence manifest in similar ways, so it is often difficult to separate these out in people who use both drugs,” said study lead author Chandni Hindocha.

“Cannabis is less addictive than tobacco, but we show here that mixing tobacco with cannabis lowers the motivation to quit using these drugs,” added Hindocha, a doctoral student at University College London’s clinical psychopharmacology unit.

For the study, researchers examined survey responses from nearly 34,000 marijuana users from 18 different countries in Europe, North and South America, and Australasia who participated in the anonymous online 2014 Global Drug Survey.

Marijuana vaporisers

Marijuana is consumed in different ways around the world, the study authors said. Mixing marijuana with tobacco is much more popular in Europe than in other parts of the world, the researchers reported in the journal Frontiers in Psychiatry.

Mixing pot with tobacco is popular with up to 91 percent of European marijuana users, compared to 52 percent of Australian pot users and just 21 percent of New Zealand users.

Tobacco-mixing methods are even less popular in the Americas, where they are used by only 16 percent of Canadian marijuana users, 4 percent of those in the United States, and about 7 percent of Mexican and Brazilian users, the researchers reported.

Use of marijuana vaporisers, which don’t use tobacco, was reported by 13 percent of survey respondents in Canada and 11 percent of those in the United States. This method is less popular in other parts of the world, the researchers said.

But, the study authors added, the way in which people use marijuana can affect their motivation to quit or seek professional help to do so.

Negative health effects

People who preferred non-tobacco methods of using pot were 62 percent more likely to want professional help to use less marijuana. And they were 81 percent more likely to want professional help to use less tobacco, the findings showed.

“Our results highlight the importance of routes of administration when considering the health effects of cannabis,” Michael Lynskey, an addiction specialist at King’s College London, said in a journal news release.

“Given a changing legislative environment surrounding access to cannabis in many jurisdictions, increased research focus should be given to reducing the use of routes of administration that involve the co-administration of tobacco,” Lynskey added.

The negative health effects of tobacco use are well known. The short-term effects of marijuana use include temporary loss of motor, working memory and decision-making skills. Long-term pot use also may lead to dependence, permanent reductions in brain function as well as heart and lung disease and some forms of cancer, according to the World Health Organisation.

Both kinds of smokers are at high risk of gum disease.

http://www.huffingtonpost.com/entry/pot-and-cigarette-smoking-have-at-least-one-health-consequence-in-common_us_5751a477e4b0ed593f142ade

Middle-age people who have smoked marijuana for many years may have a higher risk of developing gum disease, according to a new study.

However, the study did not find a link between long-term marijuana use and several other health problems associated with cigarette smoking, the researchers said.

“What we’re seeing is that cannabis may be harmful in some respects, but possibly not in every way,” Avshalom Caspi, a co-author of the study and a professor of psychology and neuroscience at Duke University, said in a statement. “We need to recognize that heavy recreational cannabis use does have some adverse consequences, but overall damage to physical health is not apparent in this study.” [11 Odd Facts About Marijuana]

In the study, the researchers looked at 1,037 people who were born in New Zealand in 1972 or 1973, and followed them until the people were 38 years old. The researchers examined whether the people had used marijuana when they were between 18 and 38, and whether they had physical health problems at age 38.

The researchers found that, among the 38-year-olds who had regularly smoked pot for 15 to 20 years, 55.6 percent had gum disease, also called periodontal disease. In comparison, only 13.5 percent of the 38-year-olds who had never used marijuana had gum disease. In some cases, this disease may lead to tooth loss.

The results also showed that the people who had smoked marijuana for up to 20 years had brushed their teeth and flossed less frequently than those who had never smoked marijuana, according to the findings, published today (June 1) in the journal JAMA Psychiatry. However, the less-frequent brushing and flossing did not explain the link between marijuana use and gum disease, which suggests that marijuana use itself may lead to damage to the gums. [5 Surprising Ways to Banish Bad Breath]

Researchers have long known that cigarette smoking has been associated with a higher risk of gum disease, said Dr. Ronald P. Burakoff, chairman of dental medicine at Northwell Health in New Hyde Park, New York, who was not involved in the study. “So I am not surprised that marijuana use also is associated with periodontal disease,” Burakoff told Live Science.

In the new study, the researchers also looked at the dental and general physical health of 484 people in the study who had smoked cigarettes on a daily basis at some point in their lives. In line with previous research, they found that those people were also more likely to have gum disease than those who had never smoked.

But these people were also more likely to have problems with their lung function, higher blood sugar levels andinflammation than those who had never smoked cigarettes.

In contrast, when the researchers looked at the same aspects of lung function and cardiovascular health among the people who had smoked marijuana for up to 20 years, they did not find these aspects were worse than they were in the people who had never smoked marijuana.

One limitation of the new study was that the researchers looked only at specific aspects of the people’s health assessed at a specific age, the researchers said. This means that the use of marijuana still may be linked to other health problems, such as cancer, that tend to occur later in life, they said.

Previous research has found links between the use of marijuana and weight gain, brain changes and the worsening of sexual function, among other health problems.

The new results “should be interpreted in the context of prior research showing that cannabis use is associated withaccidents and injuries, bronchitis, acute cardiovascular events and, possibly, infectious diseases and cancer, as well as poor psychosocial and mental-health outcomes,” the researchers wrote.

In this series, I’ll be investigating different drugs, busting some myths and explaining potential harms and benefits. This week it’s the turn of tobacco

https://www.theguardian.com/science/sifting-the-evidence/2016/jun/02/say-why-to-drugs-the-smoke-and-mirrors-of-tobacco-cigarettes-harm

What’s the appeal?
Tobacco, the dried leaf that’s smoked in cigarettes, cigars and pipes, and taken in various other forms such as snus and chewing tobacco, has been used as a recreational drug for hundreds, if not thousands of years. Cigarettes as a method for smoking became popular during World War one, when they were included as part of soldiers’ ration packs. People who smoke report that it relives stress, and can make them feel calmer and more relaxed. But is this really the case? Two in three smokers will have started smoking before the age of 18, and smoking is illegal in this age group, in the UK and many other countries around the world. The percentage of current smokers who want to quit is similarly high (around 2 in 3 current smokers report wanting to quit).

Short term effects
While there’s no real intoxication effect of cigarettes, if a person is not used to nicotine, a cigarette can make them feel sick or dizzy. Smoking a cigarette raises your heart rate. If a person is a regular smoker and addicted to nicotine, then smoking a cigarette can bring a person out of withdrawal. Nicotine withdrawal is characterised by feelings of anxiety, irritability, headaches and difficulty concentrating. It could be that the reason smokers report that cigarettes lower their anxiety and stress is because of the alleviation of these withdrawal effects – indeed, this seems likely, as long term use of cigarettes is associated with higher levels of depression and anxiety.

Long-term effects
The health impacts of cigarettes have been known for well over half a century. Cigarettes are responsible for the premature deaths of 2 in 3 users, according to recent figures from the UK and the USA. Smoking causes lung cancer, and at least 13 other types of cancer, to a varying degree. Cancer Research UK estimate that smoking causes a quarter of all cancer deaths in the UK, and nearly 1 in 5 cancer cases. Smoking also increases the risk of heart disease and lung disease aside from cancer.

There has been some suggestion that smoking, or nicotine in particular, might be beneficial for Parkinson’s disease. Indeed, Parkinsons UK have funded research looking in to this. However, as yet the evidence is thin on the ground, and there’s some reason to believe that this seemingly positive association might be a statistical artefact. Given that smoking kills so many people who do it, the smokers who survive long enough to be at risk of Parkinson’s disease might be an unusually hardy bunch, so it could be this rather than the nicotine that’s protective against Parkinson’s. Elderly smokers represent a really interesting population to research for this reason, if we can identify why they don’t succumb to smoking related illnesses, this might be extremely useful for designing treatments for others.

Myth busting
Nicotine is extremely dangerous: No, while nicotine is the addictive substance in cigarettes, it’s not the really harmful part of them. The process of burning tobacco releases carbon monoxide, hydrogen cyanide, at least 70 known carcinogens, and a variety of other chemicals. Nicotine is addictive, but specifically in cigarettes rather than in other forms, as tobacco’s acidity in cigarettes differs from cigars and chewing tobacco, meaning that nicotine is absorbed through the lungs when smoking cigarettes, giving a much more immediate hit. Cigars, inhalators, nicotine gum and patches all have a slower effect due to the nicotine being absorbed through the mouth or skin, and therefore taking longer to reach the brain.

Shisha is less harmful than cigarettes: A lot of people assume that shisha is less harmful than smoking cigarettes, because the smoke is cooler, and because of the flavouring, some people assume that shisha doesn’t contain tobacco. However, most commonly shisha will contain tobacco, and although the smoke is cooler, very little filtering of the smoke occurs as it passes through the water, and the current evidence suggests its unlikely to be less harmful than cigarattes. However, given different smoking patterns when using shisha compared to cigarettes, direct comparisons are hard. Although shisha sessions often last a lot longer, they are undertaken much less frequently. And far less research has been conducted on the effects of shisha, as compared to cigarettes. Even so, it seems that shisha is not as safe as a lot of people seem to assume it is.

Menthol cigarettes are safer/menthol cigarettes are more harmful: There is disagreement even among the myths surrounding menthol cigarettes. Again, there’s been less research conducted on menthol cigarettes compared to regular cigarettes, but there’s no evidence to suggest they’re any more or less harmful – it seems likely that they’re just as harmful as regular tobacco.

Roll-ups and natural tobacco are less harmful: It’s a common belief that rolling tobacco contains less of the harmful chemicals and components than machine made cigarettes. This is a myth. Some studies have found that rolling tobacco actually contains more additives than factory made cigarettes, and one animal study suggested that rolling tobacco was more addictive, although this was a small study.

Light or low tar cigarettes are less harmful: You may have noticed that there’s no such thing as Marlboro lights any more. Tobacco companies are no longer allowed to market cigarettes as ‘light’, since light cigarettes were no less harmful than regular cigarettes. And this was due to the difference between humans and machines. Light cigarettes were created by altering the filter – more holes were added to it, with the idea being that smoke would escape before being inhaled, so less harmful particles would be breathed in. This was tested using machines that ‘smoked’, and lo and behold, this was the case. The machines ‘inhaled’ lower levels of smoke. But humans aren’t machines, and altered their smoking patterns, squeezing at the filters and dragging more deeply on the cigarettes, meaning any benefit of the altered filters was lost.

Cutting down smoking will reduce the levels of harm from smoking: It seems hard to believe that this isn’t the case, but cutting down the number of cigarettes you smoke doesn’t necessarily reduce the risk of smoking-related harm. This is related to the myth above – if a person is used to getting a certain amount of nicotine in a day, then if they smoke fewer cigarettes, they’re likely to draw more deeply, take more puffs, and hold the smoke in their lungs longer for the cigarettes they do smoke. Psychologically, cutting down is a great first step in the quit process, but in terms of harm reduction, quitting is really the only way.

What do we still not know?
You might think that we know all there it to know about cigarettes and tobacco. We’ve known for more than half a century that smoking causes lung cancer, and the physical effects of smoking are fairly well understood. But there is still a lot that we don’t know. For example, why do some people find it really easy to quit smoking, while others really struggle? There’s evidence that smoking behavior is partly genetic. Genotype predicts how heavily a smoker will smoke, and can affect it up to the level of a couple of cigarettes extra per day. This might go some way to explaining why it’s easier for some to give up than others, and could even represent a method to work out how to help a person to quit. If your addiction is stronger, maybe you’ll need pharmacotherapy rather than trying to quit cold turkey, for example.

The other emerging area of research that I’m really interested in is trying to understand why smoking rates are so much higher in populations with mental health difficulties. We understand the physical effects of tobacco so well, but we’re much less sure about why these associations come about.

These articles are companion pieces to my Say Why To Drugs podcast, which can be listened to here.

Previous articles in the Say Why to Drugs series can be found here: cannabis.

This piece was corrected on 2 June 2016 to clarify that the statement ‘nicotine is extremely dangerous’ is a myth.