Caffeine for Healthy Hair Growth?
Caffeine is commonly found in many types of drinks, such as coffee, tea and soda. While there is no scientific evidence that caffeine can help hair grow faster, there are some anecdotal reports from people who claim that caffeine helps for hair growth.
One study published in the “International Journal of Cosmetology” in 2006 looked at whether or not caffeine could help promote hair growth in women. The study found that consuming 300 milligrams (mg) of caffeine each day increased the level of a protein called keratin in the hair follicles, which may indicate that it helped to stimulate hair growth. However, the study was small and did not look at whether or not caffeine can actually prevent hair loss.
Another study published in the “Journal of Investigative Dermatology” in 2010 looked at whether or not silicone treatment could lead to faster hair growth. The study found that silicone treatment did not lead to any significant increase in hair growth over a period of six months but did cause damage to the hair follicles, which may have led to hair loss.
Although caffeine can sometimes cause hair loss, there's no evidence that it will reliably do so. Furthermore, no reliable study has shown that caffeine prevents hair loss or slows hair loss. If the goal is to prevent further bone density loss, however, caffeine could be useful in preventing bone fractures.