I was doing research on IGF-1 (Insulin-like Growth Factor) and to cut it short: it claims to regrows hair. Then I came across some studies that claim high levels of IGF-1 caused balding, which is contradictory to other studies saying the opposite. Next I learned that the commercial milk industies uses synthetic growth hormones on all the cows and treat them like milk machines. rBGH is the name of the main hormone they use to increase milk production. rBGH (Bovine Growth Hormone) increases IGF-1 levels, which when drank by the young causes growth. Studies show that high levels of circulating IGF-1 causes balding, studies also show milk consumption is related to hormonal cancer like breast, colon, and prostate. So, why is milk so bad, if it is a good source of IGF-1 which has shown to regulate hair growth cycles? It is because milk raises your estradiol levels and probably contains xenoestrogens. Estradiol prevents IGF-1 from binding to the receptor, so instead of binding to the recepter and being beneficial, it can circulate the body promoting unwanted changes, such as cancer. The more estrogen you have in your body the less Growth Hormone you can absorb, this is why women are smaller than men. Estradiol also saturates the androgen receptor tricking your body into thinking it has enough testosterone when it really doesent. So I have come to the conclusion that IGF-1 is good for hair growth, but excess estrogen within your body will cause the IGF-1 to act against you instead of promote tissue regeneration and muscle growth. Avoid animal fat including milk (animal fat increases estradiol), but make sure you get good protein sources like eggs,fish,turkey,beans etc. Eliminate excess estrogen by exercising, eating fiber foods, avoiding disposible plastic water bottles, flaxseeds reduce estradiol, and the suppliment DIM helps with estrogen matabolism, and finally research: andropause or estrogen dominance.