I've been doing a research project on the effects of weed on the body and mind. This one book i got for research says.....


"Gynecomastia. The enlargement of breast glands in males, a common transient occurrence among adolescents, has long been rumored to be affected by cannabis use. Gynecomastia also is caused by cirrhosis of the liver, by testicular, adrenal, and pituitary tumors, and by steroids, amphetamines, and other drugs. In 1972 a team of researchers presented fourteen cases of breast development in young men who had smoked cannabis for sevral years. Others were excluded. Only three of the fourteen patients experienced a decrease in breast development after abstaining from cannabis. A controlled study in 1977 of eleven gynecomastic U.S. soldiers in Germany found only "anon-association between idiopathic gynecomastia and chronic cannabis use." If cannabis has any effect on gynecomastia, it depends on dosage, potency, frequency of use, and the endrocrinolofy of the individual."