Baldness is often hereditary and linked to male hormones, becoming noticeable when half the hair is lost.
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October 1984 in “The BMJ” Up to 50% of scalp hair can be lost before it appears thin, and treatment is only needed for hair loss caused by diseases or deficiencies.
April 2026 in “Frontiers in Cell and Developmental Biology” Hair cell loss usually happens after hearing loss starts.
September 2024 in “PubMed” Hair loss can be treated based on its type and cause, improving quality of life.
January 2008 in “Journal of The American Academy of Dermatology” Hair loss affects 20% of people, more in men and those over 35, and is often associated with a sensitive scalp.