Vitamin deficiencies, including biotin, vitamin D, iron, and zinc, can disrupt hair growth, leading to thinning and shedding.

vitamin B12 deficiency is one frequently marketed by some organizations as causing hair loss. Though such research is mixed, maintaining enough B12 in one's diet is essential for growth and ...

A lack of vitamin D is another common factor in hair thinning. Known as the 'sunshine vitamin', it’s crucial for follicle health. Low levels can disrupt the hair’s natural growth cycle, leading to ...