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Dr. Ioannis Nikitidis MD, RD, MSc

Expert Medical Advisory Team - Medical Weight Management, Obesity

  • Expertise: Doctor of Med (MD), MSc, BSc, Specialist Certification in Obesity Education.

Advisory role

Dr. Ioannis Nikitidis experience as a medical doctor, dietician and a masters degree holder in “Exercise and Health” has made him an invaluable asset to the Vityl medical team. He currently assists our consulting doctors with;

  • The latest advancements in medical treatments for weight loss.
  • Advanced diet planning and nutrition especially with regards to Mediterranean diets for sexual function and Ketogenic diets for diabetes management.
  • Care plans for obese and overweight patients.
  • Research into the most up to date treatment methodologies for men’s health issues.
  • Educational content creation on the topics of exercise, weight loss and healthy eating.


Dr. Ioannis Nikitidis has been a practicing medical doctor since 2012 and a registered dietician since 2004. He also holds a masters degree in “Excercise and Health” and a specialist certification of Obesity Professional Education by the World Obesity Federation.

Dr. Nikitidis life revolves around healing patients with integrative med., healthy living, exercise and preventative med.

His research interests include the prevention and treatment of chronic diseases like heart disease, obesity, diabetes, cancer and the impact of nutrition, weight-loss and exercise on these diseases.

Over the last 16 years Ioannis has treated thousands of men suffering from sexual dysfunction. His experience shows that lifestyle changes and a healthy BMI were key to improving sexual performance.

Medical School & Residency

2015-2019: Master of Science in “Healthcare Management” Hellenic Open University.

2012-2015: Master of Science in “Exercise and Health” Department of Physical Education and Sport Science of the University of Thessaly-Greece. Thesis: “The effect of aerobic and anaerobic exercise on oxidative stress markers” 

2014: Specialist Certification of Obesity Professional Education (SCOPE), World Obesity Federation  

2005-2012: Medical Doctor Diploma– School of Med., Democritus University of Thrace, Greece.

2000-2004: Bachelor’s Degree in Nutrition and Dietetics, Technological Institute of Crete, Greece. Thesis: Alimentary habits, use and necessity of supplements of diet in the yield of body-building athletes. 


Papazoglou D, Papathanasiou P, Papanas N, Papatheodorou K, Chatziangeli E, Nikitidis I, Kotsiou S, Maltezos E. Uncoupling Protein-2 45-Base Pair Insertion/Deletion Polymorphism: Is There an Association with Severe Obesity and Weight Loss in Morbidly Obese Subjects? Metabolic Syndrome and Related Disorders, 2012 Aug;10(4):307-11 

Nikitidis I.  “Functional Foods and Metabolic Syndrome”. IJHS Greek Pages 2008;1(1):12-15 

Nikitidis I., Deli H., Sakellariou V., Apostolopoulos A., Fatouros I., Koutentakis I., Jamurtas A. “The effect of aerobic and anaerobic exercise on oxidative stress markers” 5th Conference on Biochemistry and Physiology of Exercise, Athens, 6-7 November 2015 

Nikitidis Ioannis,” Side Effects of Diabetes that Effect  Exercise of Diabetic Patients”, 18th International Congress of Physical Education and Sport,  Komotini 21-23 May 2010

Nikitidis Ioannis, “Effect of Functional Foods in the Cholesterol Levels”, 25th North-Greek Medical Congress, 18-20 March 2010 

Fillipidou E., Papazoglou D., Papathanasiou P, Hatziaggeli E., Papadopoulos T, Nikitidis I,Papatheodorou K.,Papanas N,Maltezos E, “I/D Polymorphism of the UCP2  Gene and Morbid Obesity,8th Panhellenic Medical Congress of Obesity”,18-20 March 2010 

Nikitidis Ioannis, “Use of Functional Foods against Metabolic Syndrome”, 2nd Panhellenic Congress D.E.D.Y.T.  –Modern Nutrition Challenges for the Safety and Quality of Foods, Thessaloniki 6-8 June 2008 

Nikitidis Ioannis, “Nutritional Habits of the Bodybuilding Athletes in Relation to the Habits of an Average Person”, 15th International Congress of Physical Education and Sport, Komotini 18-20 May 2007 

Articles written by Dr. Ioannis Nikitidis MD, RD, MSc