(NaturalNews) Hair loss is a natural process that progresses with age, but many nutrients have been shown to improve circulation to the scalp, prevent hair thinning and hair loss. Adding simple nutrients from food and vitamins can both repair hair and help to regrow hair, starting at the roots. Biotin is an important nutrient to help prevent hair loss. Genetics play a part in predicting who will lose hair and when, but diet can delay or prevent hair loss and age-related balding. Treatments applied topically, such as hair masks, conditioners and vitamin treatments can also help but the best results occur when nutrients such as biotin are added to the diet.