I've been answering a lot of questions lately about smoking marijuana and the effects it can have on androgenetic alopecia. Simply put, can marijuana cause hair loss?
Fortunately not, but it can aggravate such medical conditions such as alopecia areata (bald spots on the scalp).
Smoking marijuana habitually can cause a general loss of hair through its effects on the liver, but since 2002, Advanced Trichology has never treated a client with hair loss directly related or stemming from smoking marijuana.
For more information on medical marijuana and government reports please visit the following links: