Hair loss is a problem that affects both women and men, regardless of age. Although the causes can be varied – from stress and illness to hormonal factors – very often the root of the issue lies in a deficiency of key vitamins and nutrients. A diet poor in micronutrients, a fast-paced lifestyle, and insufficient body regeneration mean that hair is often one of the first areas to show signs of weakness. Which vitamins play the most important role in hair loss, and when is supplementation worth considering?