Hair loss isn't always a hair problem. Nutrient deficiencies such as low iron, protein, vitamin D, zinc, and B vitamins can disrupt the hair growth cycle and trigger excessive shedding. Learn how nutrition affects follicle health and when to seek professional evaluation.

Hair loss isn't always a hair problem. Nutrient deficiencies such as low iron, protein, vitamin D, zinc, and B vitamins can disrupt the hair growth cycle and trigger excessive shedding. Learn how nutrition affects follicle health and when to seek professional evaluation.