- M.D., Ph.D., Professor at Karolinska Institutet
- Specialized in pediatric endocrinology, founder of the Swedish National Childhood Obesity Centre
- Member of the boards of Swedish Childhood Obesity Society and the Obesity Club of European Society for Pediatric Endocrinology
- Founder and chairman of Evira AB
- Previously medical advisor and 2019-2020 chairman of Sigrid Thx AB
- Member of the scientific advisory boards of the commercial weight loss company Itrim and the wellness branch of Oriflame AB
- Medical advisor at Novo Nordisk
- Dr Marcus has published more than 250 articles in peer reviewed international journals
- Strategic advisor of the world largest FMCG companies, more on Frederic Fernandez & Associates at: www.fredericfernandezassociates.com
