Heart Doc VIP with Dr. Joel Kahn

Episode 467: Is Melatonin Use a Risk for Heart Health?

Nov 11, 2025
Dr. Kahn explores troubling research suggesting melatonin might increase heart failure risk. He discusses aspirin's potential benefits for diabetics, fruit's protective role against Parkinson's disease, and how metformin can hinder exercise benefits. The impact of heavy metals on heart health and the surprising influence of marriage on aging are also highlighted. Plus, hear about daily walking's connection to Alzheimer’s prevention and new findings on statins’ effectiveness.
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INSIGHT

Fruit Is Strongly Protective For Parkinson’s Risk

  • Diet patterns high in sweets and processed red meats associate with increased Parkinson's risk, while fruit intake shows the strongest protective signal.
  • Favoring fruit and reducing processed meats may lower Parkinson's disease likelihood.
ADVICE

Consider Metformin’s Interaction With Exercise

  • If you take metformin, be aware high-dose metformin may blunt vascular improvements from exercise.
  • Discuss dosing with your doctor and avoid assuming maximal doses enhance exercise benefits.
ADVICE

Reduce Heavy Metal Exposure For Heart And Brain

  • Test for heavy metals if concerned and reduce exposure by choosing smaller fish and avoiding old mercury dental fillings.
  • Address lead in home water and consider blood or hair testing when risk factors exist.
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