Dr. Antonella Tosti is a Fredric Brandt Endowed professor of Dermatology and Cutaneous Surgery at the University of Miami. She is also the chief medical advisor to DS Laboratories. Tosti is a worldwide recognized expert in hair and nail disorders and contact dermatitis, and has been invited to lecture at major international conferences. 
 
She is president of the American Hair Research Society, a founding member and past president of the European Hair Research Society and European Nail Society, a past president and member with the Board of Directors of the Council of Nail Disorders, the secretary & treasurer of the North American Research Society, an editor of four textbooks on diagnosis and treatment of hair disorders and three textbooks on nail disorders, the author of Dermoscopy of Hair and Nails, and the author of over 700 scientific publications and six books on diagnosis and treatment of hair disorders.
 
In this episode of The Doctor’s Opinion, Tosti answers questions about scalp and hair care. What are some causes of hair loss? Why is it so prevalent? How can it be prevented?