Many notable figures like Charles Darwin, Michael Jordan, and Yoda share the trait of baldness. Despite the historical association of a bald head with intelligence, balding individuals often desire hair restoration. Scientists have studied the causes of hair loss, identifying genetic factors and hormonal effects, particularly related to dihydrotestosterone (DHT). The hair growth cycle consists of anagen, catagen, and telogen phases, each with specific characteristics and durations. Male pattern baldness affects 95% of baldness cases in men, progressing gradually according to the Norwood Scale. Stress and medical treatments like chemotherapy can also impact hair growth. However, advancements in scientific understanding offer potential solutions, including medications to stimulate hair follicles and stem cell research.
Vocabulary:
• Baldness: The state of being bald, having little or no hair on the scalp.
• Follicles: Small cavity or sacs from which hair grows.
• Dihydrotestosterone (DHT): A hormone derived from testosterone that can contribute to hair loss.
• Anagen: The active growth phase of hair follicles.• Catagen: The transitional phase between active growth and rest.
• Telogen: The resting phase of the hair growth cycle.
• Chemotherapy: Treatment using drugs to destroy cancer cells.
• Stem cells: Undifferentiated cells with the ability to develop into various cell types.
Source: TED-Ed