I would imagine smoking anything is not good for your lungs. If I remember my time back in the 60s correctly the amount of pot smoked was a lot less than what most cigarette smokers consumed. I have heard cannabis does not contain the cancer causing compounds found in cigarettes. Also anyone concerned with their health would probably consume their pot in edibles such as brownies or with a vaporiser which is much healthier. I am sure many seniors could benefit from the medical uses of cannabis.
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