Dr. Alexander Martynchuk is a member of the Herbalife Nutrition Advisory Board and an expert in the diagnostics and treatment of obesity and gastroenterological pathologies.

Dr. Martynchuk is a regular speaker on the subjects of gastroenterology and obesity issues at scientific conferences around the world. He has authored and coauthored 47 scientific publications on nutrition and modern diets. He has also served as the Vice President of the Ukrainian Dietitian Association since 2017.

Dr. Martynchuk graduated from the National Medical University (NMU) in Kiev as a general practitioner in 2001. He then went on to complete his medical training at the Department of Internal Diseases of NMU. In 2007, he received his Ph.D. in medical sciences. He then became an associate professor at the Department of Internal Diseases at NMU.