July 2003 in “Journal of Cutaneous Medicine and Surgery” Stopping certain drugs can improve skin conditions, arsenicosis affects over half of a Bangladeshi village, males are more vulnerable, and certain treatments are effective for warts, acne, and psoriasis. Smoking and drinking are linked to psoriasis in men, a cream helps with a type of skin cancer, and low iron levels don't directly cause chronic hair loss in women.
A bald man grew hair on his head after taking a drug called diazoxide, but lost it again when he stopped the medication.
Jockeys using diuretics without potassium supplements can face health problems.
Hair loss should be medically treated, as non-medical treatments are ineffective and hair loss can indicate serious health issues.
February 1960 in “Journal of the American Medical Association” Treatments for hair loss include estrogen therapy and special shampoos.
April 2016 in “Journal of Investigative Dermatology” 
1341 citations,
January 2014 in “Cardiology Research and Practice” Managing metabolic syndrome needs both lifestyle changes and medical treatments.
1040 citations,
October 1992 in “The New England Journal of Medicine” Finasteride effectively treats BPH but may increase sexual dysfunction risk.
788 citations,
February 2007 in “Nature” The document concludes that skin stem cells are important for hair growth and wound healing, and could be used in regenerative medicine.
658 citations,
June 2003 in “Endocrine reviews” Male hormones may play a role in the development of heart disease, and more research is needed to understand their effects.