I took colostrum for 1.5 months and began shedding hair. my scalp is very itchy now. i have stopped taking it from today. will the hair loss stop and my hair regrow? i have heard that the igf-1 is the cause.

Growth Hormone: Exerts some effects through igf-1 (used by some to stimulate hair growth), a "differentiation" factor. Colostrum is also sometimes taken to induce hair growth. So, hair loss due to colostrum isn't likely and discontinuing the use of it shouldn't increase hair growth. Hair loss, if due to male pattern baldness, may continue despite these supplements.

Probably.: I'm assuming you're talking about bovine colostrum. Any medication or supplement can cause temporary hair loss (technical name: telogen effluvium), and it nearly always grows back; but you'll have to give it some time. Insulin-like growth factors (igf) are probably not the mediators in such situations, but no one knows for sure. Biotin (a b vitamin) 5000 units/day may help to speed up regrowth.

Must see: Please see your dermatologist for evaluation and to discuss treatment options. This is the only way you will find out the type of hair loss you have.