Hair loss can begin as early as the 20s and 30s, often linked to hormonal changes, autoimmune diseases, and thyroid imbalances. Conditions like lupus and Hashimoto's can significantly impact hair growth, while hypothyroidism may lead to noticeable thinning, including the loss of eyebrow hair. Additionally, certain medications and gluten sensitivity can contribute to hair loss, highlighting the complex interplay between health and hair vitality.
