From what I have heard, smoking and Oral contraceptives increases the risks of blood clots. The risk is not that great until you reach your 30s. I would imagine that pot smoking or any kind of smoking would have the same risks. However, if you are only smoking weed occasionally then you should have nothing to worry about.
PS Don't smoke cigarettes. I think it is worse for you than pot.
Sure u r jocking about smoking marijuana, do u know that it leads to early aAlzhaimer, atrophy of frontal lobe of the brain which is associated with aggressive behaviour .
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