Biotin enhances keratin production and inhibits DHT (linked to pattern baldness). A Journal of Investigative Dermatology study showed hair regrowth in women correcting B-vitamin deficiencies. Best food sources: beef liver, eggs, salmon, sunflower seeds and sweet potatoes. Nearly 41% of people have insufficient vitamin D, which slows follicle cycling and increases shedding. Experts recommend 5,000 IU daily (with healthy fats for absorption) since diet and sunlight alone often fall short. Biotin strengthens hair structure, while vitamin D maintains follicle activity. Adding collagen provides amino acids for strand resilience – especially helpful for those with absorption issues (under medical guidance). Gut function determines how…

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