Is there a relation between biotin and gaining weight 1000mcg , what can i do to make my hair stronger and to stop hair lose, 17yrs.thnx for answering?

N0: There is no evidence that biotin causes weight gain. It is eating too much and exercising too little which cause weight gain (yes, even in low thyroid status).

See a dermatologist: Biotin is a complete waste of money. Hair loss ; weight gain may be signs of pcos: polycystic ovary disease. When you see the dr be prepared to discuss your menstrual history, any pregnancies, any birth control, any med or herbs or vits. Any family history of thyroid disease? Family members with hair issues? You probably will benefit from exam ; blood tests.