Smoking marijuana causes fertility problems because it makes men's sperm 'lazily swim in circles'

http://www.dailymail.co.uk/news/article-4846328/Marijuana-makes-men-s-sperm-lazily-swim-circles.html

Smoking marijuana causes fertility problems because it makes men's sperm 'lazily swim in circles' say experts

Men who smoke too much marijuana could face fertility problems because the drug makes sperm 'mellow' causing it to 'swim in circles'.

...Previous studies have shown that marijuana can affect fertility by cutting sperm count and suppressing ovulation in women.

...But fertility problems are not the only danger of smoking marijuana.
The drug can increase the heart rate and affect blood pressure - while increasing the risk of a pregnant woman's baby being born smaller than expected.

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More good reasons not to use this dangerous and deadly weed.