Balding is extremely common in men and is associated with high levels of male hormones. Recently, the Daily Mail of England invited many medical experts to summarize six secrets about balding men.
1. High risk of heart disease. Balding men have a higher risk of developing heart disease. A study published in the British Medical Journal Open Edition in 2013 showed that men who have lost most of their hair are 32% more likely to develop heart disease. This disease is caused by a blockage in the arteries that reduces the blood supply to the heart. It is a common cause of death in the UK, causing approximately 180000 deaths each year.
2. Prostate hypertrophy. A study of 30 men by Spanish scholars found that balding men had a 34% larger prostate gland than men with thick hair.
3. More pressure. Men and women under stress produce large amounts of adrenaline, cortisol, and testosterone. These hormones cause the hair follicles to enter a "dormant" state, and when the hair falls off, the hair follicles remain inactive for three months.
4. Thyroid dysfunction. Balding and thinning hair may indicate abnormal thyroid function. The hormones released by the thyroid gland in the neck can regulate many important functions of the human body, including hair growth.
5. Immune system disorders. Baldness can also be caused by lupus erythematosus, an autoimmune disease that can cause systemic inflammation. "Hair loss may be the first symptom of lupus erythematosus because the patient's immune system attacks the hair follicles," said Geraldine Renard of the British lupus erythematosus charity
6. Less prone to testicular cancer and higher libido. Men with hair loss are less likely to develop testicular tumors. Tim Oliver, emeritus professor of medical oncology at Queen Mary's College, University of London, said: "It is likely that a large amount of testosterone provides some protection for balding patients." Balding men have higher testosterone levels and stronger libido. Men who lack testosterone typically have fewer erections. Professor Oliver said, "Testosterone is necessary for erectile and sexual function, and the pheromones that express sexual desire are also affected by testosterone levels."