Currently, there is no evidence to indicate that marijuana, or cannabis, decreases the effectiveness of birth control. While more research is still needed, cannabis is unlikely to negatively affect these methods of contraception. However, some possible side effects of cannabis use may interact with these medications. Marijuana (also called marijuana, weed, and cannabis) is a drug that comes from the dry leaves, flowers, stems and seeds of the cannabis plant.
For the study, researchers took blood samples from 16 women aged 21 to 35 while smoking a regular 1 gram marijuana cigarette and when smoking a marijuana cigarette that had been removed tetrahydrocannabinal (THC). Even if it's legal where you live for personal or medical use, no amount of marijuana is safe for using marijuana during pregnancy, or even for treating morning sickness. Previous studies have linked marijuana use by women to fertility problems, and animal research indicated that the substance in marijuana that causes feelings of euphoria could affect certain hormones.