Garrett said:
Marijuana is actually worse for your lungs than tobacco. The saving grace is people who smoke weed typically indulge less than those who smoke tobacco.
As for wine, there is a lot of science behind the benefits. Some doctors will even recommend wine in moderation for some issues.
Yes but not all doctors do agree now with that alcohol is healthy for you. BBC had a long story not so long ago how it just might be a myth how wine is healthy for you.
They are finding that even light drinkers have increase risks of some cancers now.
The big problem with the studies is many adults who never drink aren't in perfect health to start with. They either had health problems--take medicines which their doctors tell them not to drink or have been heavy drinkers in the past.
http://news.bbc.co.uk/2/hi/health/8079816.stm
Government guidelines state that men and women should not consume more than 21 or 14 alcoholic drinks each week.
Yet the Million Women study reported that just one drink a week increases your risk of breast, pharynx and liver cancer.
No wonder a recent UK survey for the World Cancer Research Fund found that people are deeply sceptical about claims for what causes or prevents cancer.
In exploring the alcohol-cancer connection, Radio 4's Frontiers reveals a frightening lack of knowledge about how alcohol interacts with the body.
Toxic compounds
Scientists do not know definitively why we get hangovers or how alcohol may be causing cancer.
In high doses it does seem to enhance the lifespan of mice - but you need huge doses
Professor Roger Corder
Alcohol is metabolised in the body into toxic compounds - but how these compounds cause damage is unknown.
Since genetics, gender and age play an important role in how we interact with alcohol, a safe amount for one is not safe for another.
The negative effects of alcohol on health and the economy are reported regularly in the media and highlighted by the government.
But despite the link between alcohol and cancer being known for over 100 years, it is an area of research that is little understood and, according to many scientists, underfunded.
This means that drinkers, no matter how moderate their consumption, are not fully aware of the risks or damage, as the science is not there.
In fact, many drinkers believe they are improving their health.
Myth
"It's an absolute myth that red wine is good for you," says Professor Valerie Beral from the University of Oxford and lead author of the Million Women study.
"The evidence is not there."
Professor Roger Corder, author of The Red Wine Diet, would disagree.
"Our research identified a group of chemicals called procyanadins which are polyphenols, and the key component in terms of protecting from heart disease."
Polyphenols, such as the antioxidant resveratrol, are found in the skins of red wine grapes.
"In high doses it does seem to enhance the lifespan of mice. But," he adds crucially, "you need huge doses."
In humans, it equates to thousands of litres of wine.