One of the most important things you can do to help prevent serious birth defects in your baby is to get enough folic acid every day - especially before conception and during early pregnancy. [Skip to Content]
Those who admitted to regularly smoking pot had a sperm count that was 29 percent lower than those who reported lighter use or didnât smoke at all. Meanwhile, men who used other recreational drugs alongside marijuana had sperm counts reduced by 55 percent and sperm concentrations reduced by 52 percent. Pot smokers were also found to have higher levels of testosterone within the same range as cigarette smokers.
Blood Tests. Unlike urine tests, blood tests detect the active presence of THC in the bloodstream. In the case of smoked marijuana, THC peaks rapidly in the first few minutes after inhaling, often to levels above 100 ng/ml in blood plasma. It then declines quickly to single-digit levels within an hour.