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Ioannis Nikitidis

Ioannis Nikitidis

Endocrinology Resident · Certified Obesity Specialist (Medical Reviewer)

Dr. Ioannis Nikitidis is an endocrinology resident physician, SCOPE-certified obesity specialist (World Obesity Federation), and licensed clinical dietitian-nutritionist. Dr. Nikitidis uniquely bridges clinical medicine and nutritional biochemistry, holding a medical degree from Democritus University of Thrace and master's degrees in both Exercise Science and Healthcare Management. In his clinical and editorial practice, he emphasizes sustainable weight management, GLP-1 pharmacology, and comprehensive metabolic risk reduction. As a medical reviewer at Helimeds, Dr. Nikitidis reviews and verifies clinical accuracy across metabolic and hormonal health guides.

  • Endocrinology
  • Obesity Medicine
  • Weight Management
  • Clinical Nutrition
  • Metabolic Syndrome
  • Type 2 Diabetes

“Effective weight management bridges clinical endocrinology and practical nutritional science, empowering patients with sustainable, evidence-based care.”

Ioannis Nikitidis, MD, MSc, BSc
  • Certified Obesity Specialist — SCOPE (World Obesity Federation)
  • Licensed Medical Practitioner — Hellenic Medical Association
  • Member, European Society of Endocrinology (ESE)
  • Member, Hellenic Endocrine Society
  • Registered Clinical Dietitian-Nutritionist

EXPERIENCE

Career and education

Career

  1. 2023 – Present

    Endocrinology Resident Physician

    Venizeleio-Pananeio General Hospital of Heraklion

  2. 2024 – Present

    Medical Reviewer & Editorial Contributor

    Helimeds

  3. 2015 – 2023

    Clinical Dietitian & Nutrition Consultant

    Private Clinical Practice

Education

  1. 2017 – 2023

    Doctor of Medicine (MD)

    Democritus University of Thrace School of Medicine

  2. 2019 – 2022

    MSc, Healthcare Management

    Hellenic Open University

  3. 2016 – 2018

    MSc, Exercise and Health

    University of Thessaly

  4. 2010 – 2015

    BSc, Nutrition and Dietetics

    Technological Educational Institute (TEI) of Crete

TRUST & SAFETY

Our fact-checking standards

Every Helimeds article is written from peer-reviewed research and clinical guidelines, then reviewed by a licensed medical professional like Dr. Nikitidis before publication — and re-reviewed whenever the evidence changes. Reviewers can reject or require changes to any article.

BLOGS

Articles reviewed by Ioannis Nikitidis

See more blogs
  • A man thinking about side effects of tadalafil
    9 min read
    Fact Checked

    Tadalafil Side Effects: Common, Serious, and Long-Term Effects

    Tadalafil (Cialis) can cause side effects such as headache, indigestion, back pain, muscle aches, flushing, and nasal congestion. Official Cialis prescribing information lists these among the drug’s known adverse reactions. Most are mild or temporary, but tadalafil can also cause uncommon or rare problems that need urgent medical attention, including a prolonged erection, sudden vision or hearing changes, and dangerously low blood pressure when combined with nitrates.

  • The doctor explaining a patient what are side effects of NAD injections
    12 min read
    Fact Checked

    NAD Injection Side Effects: What Every Patient Should Know Before Treatment

    NAD injections and intravenous (IV) NAD+ infusions are increasingly marketed in wellness settings for goals such as energy, cognition, recovery, and healthy aging. However, evidence for these clinical benefits remains limited, and injectable NAD+ products are not FDA-approved treatments for these purposes.

  • A doctor with ozempic and a patient
    11 min read
    Fact Checked

    Can You Take Ozempic for Prediabetes?

    Prediabetes often flies under the radar—until it doesn’t. With rising cases and growing concern around early intervention, more people are exploring new tools to slow the progression toward type 2 diabetes. One option gaining attention? Ozempic for prediabetes. Though not officially approved for this use, doctors are increasingly prescribing semaglutide for prediabetes off-label. This medication, originally designed for managing type 2 diabetes, may also support weight loss and improve insulin sensitivity. While Ozempic isn’t a standard prediabetes medication yet, it raises a big question: can Ozempic help prediabetes—and is it right for you?