Vegetarians and especially vegans are therefore vulnerable to inadequate dietary intake
Thymosin Beta 4 and a Synthetic Peptide Containing Its Actin-Binding Domain Promote Dermal Wound Repair in db/db Diabetic Mice and in Aged Mice, Philp D, Badamchian M, Scheremeta B, Nguyen M, Goldstein AL, Kleinman HK, Wound Repair and Regeneration, 2003 JanFeb;11(1):1924
ClinicalTrials.gov SURMOUNT-1 - Tirzepatide Once Weekly in Adults with Obesity
Additionally, vitamin B12 supplementation has been shown to reduce tissue necrosis and inflammation caused by methotrexate toxicity [150]
If a person has a biotin deficiency, correcting that deficiency (whether via injections or oral supplements) can indeed reverse symptoms like hair loss or brittle nails, leading to visibly improved hair and nail quality