January 2016 in “American Journal of Clinical and Experimental Medicine” Lower zinc levels in hair are linked to more severe male pattern baldness, but blood zinc levels don't show this link. Age also increases baldness severity.
May 2024 in “Journal of trace elements in medicine and biology” Overweight or obese women before pregnancy have lower iron levels in their serum and hair during early pregnancy.
May 2023 in “BMC Women's Health” Many women who have used performance-enhancing drugs in Finland show high rates of mental health and substance use issues, and most have normal red blood cell counts.
January 2023 in “Indian Dermatology Online Journal” Micropigmentation is a cosmetic tattooing technique for hiding skin issues and creating permanent makeup, but it can have side effects.
May 2015 in “Hair transplant forum international” The article concludes that PRP might help with hair loss, but more detailed research is necessary.