English: Close up shot of some high quality marijuana. (Photo credit: Wikipedia)
The Washington Post reports a New Zealand study that chronic marijuana use has little effect on your physical health.
Personally, I am seriously uncomfortable with this news article and sense that it might be published on a Monday morning when there’s not too much news.
OK we know about the size of the sample and that it’s a longitudinal study but we have no details on the research methodology and the previous publications of the authors.
Also the article does not summarize the comprehensive literature on this field, especially in the US which does find health issues associated with chronic marijuana use. For a summary of the research literature on chronic marijuana use open this link.
There’s a need for extensive further research before it’s safe to conclude on the long term health impact of chronic marijuana use.
Thoughts?
Dr Alf's Blog 
Marijuana does not simply pass through the body as urine in the same way as alcohol but it remains in the brain where it causes people to lose their inner drive(“become mellow”) and destroys their work ethic and cognitive abilities if taken over time.
Skunk, the version which is 7 times more powerful than the “good S–T of the 1960’s and 1970’s, can cause people to become depressed, super aggressive and dangerously morose, so the idea that it is no more dangerous than not flossing one’s teeth is dangerous nonsense.
Dr. Alf has serious misgivings about this study and rightly so. I have seen the effects of excessive or even mild pot smoking and skunk consumption on people that I have known for many years, one of whom had to spend 1 year in a drug rehabilitation unit in Colindale, London, and emerged as a totally different person. We are not born with recreational drugs inside of us and should not put anything into our bodies other than food, water or medically prescribed substances when we are ill.
If we seek a “high” we should develop an enabling personal philosophy and get high on the air we breathe and on ourselves. We do not need a crutch to get through the vicissitudes of life and giving ourselves temporary quick fixes carry a price tag.