@DrKarlNadolsky

Who Is This Person?

Dr. Karl Nadolsky is a board-certified obesity medicine physician based in Michigan, USA. He is actively involved in clinical practice, research, and public education on topics related to weight management, metabolic health, and evidence-based medicine. Recent activities include tweeting about anti-aging supplements, criticizing pseudoscientific health claims (e.g., from figures like RFK Jr.), and promoting exercise as a proven anti-aging intervention. As of October 2025, he continues to engage in discussions on GLP-1 agonists, testosterone therapy myths, and political influences on health policy, with his most recent post on October 29, 2025, emphasizing exercise over unproven supplements.

Dr. Nadolsky demonstrates high credibility as a practicing physician with specialized expertise in obesity and metabolic disorders. His Twitter activity is professional, focused on education, and avoids sensationalism, consistently promoting peer-reviewed science over hype. While he expresses strong opinions against health misinformation, these are grounded in facts, making him a reliable source for medical advice on weight-related topics. Minor potential for perceived bias arises from his vocal criticism of non-evidence-based figures, but this enhances rather than detracts from his overall trustworthiness.

Assessment by Grok AI

What's Their Track Record?

Dr. Nadolsky has a strong track record of sharing accurate, evidence-based information, frequently citing medical guidelines, studies, and his clinical experience. No major fact-checks or corrections have been issued against him; instead, he is often recognized for debunking misinformation, such as myths around testosterone replacement and anti-aging fads. His content aligns with established medical consensus from organizations like the American Society for Metabolic and Bariatric Surgery.