Eyebrows thinning? Serious health conditions that could be causing this

Thinning eyebrows can signal underlying health issues, not just over-plucking. Thyroid imbalances, nutrient deficiencies, and autoimmune conditions like alopecia areata can cause hair loss. Hormonal shifts, stress, and certain medications also contribute. Over-grooming and aging play a role. Consult a doctor to rule out serious causes and explore restoration options, treating your brows with care.