20 citations,
February 1977 in “The anatomical record” Excess vitamin A changes skin and hair follicle development and affects polysaccharide distribution.
31 citations,
January 1981 in “Pharmacology & Therapeutics” Oral retinoids are effective for treating severe skin disorders but have reversible side effects and risks for pregnant women.
1 citations,
May 2011 in “Journal of Obstetrics and Gynaecology” Hair loss in postmenopausal women due to ovarian hyperthecosis is rare, but removing the ovaries can significantly improve the condition.
Hair keratin treatments can be harmful, potentially causing health issues like skin reactions and cancer.
724 citations,
April 2004 in “Lancet Oncology” Chemotherapy in the first trimester of pregnancy is risky, but in the second and third trimesters, it's generally safe with careful drug selection and timing.