According to the American Academy of Dermatology, we lose about 50 to 100 strands of hair from our head every day. But some people will experience even more significant hair loss in their lifetimes, which can be a source of anxiety and in some cases, an indicator of more serious medical issues.

On this episode of the Merck Manuals, Wendy S. Levinbook, MD, Hartford Dermatology Associates, breaks down the most common misconceptions about hair loss – along with the facts people should know.

About Merck

For over 130 years, Merck, known as MSD outside of the United States and Canada, has been inventing for life, bringing forward medicines and vaccines for many of the world's most challenging diseases in pursuit of our mission to save and improve lives. We demonstrate our commitment to patients and population health by increasing access to health care through far-reaching policies, programs and partnerships. Today, Merck continues to be at the forefront of research to prevent and treat diseases that threaten people and animals – including cancer, infectious diseases such as HIV and Ebola, and emerging animal diseases – as we aspire to be the premier research-intensive biopharmaceutical company in the world. For more information, visit www.merck.com and connect with us on Twitter, Facebook, Instagram, YouTube and LinkedIn.