Nutrition Facts with Dr. Greger

Q&A with Dr. Greger 16

Mar 5, 2026
Wide-ranging nutrition questions get concise, evidence-based answers. Topics include vitamin C on meat-only diets, matcha lead concerns, and storing nuts to prevent rancidity. Discussion covers protein needs, very low LDL safety, benefits of purple kale, carb quality, sweetener moderation, flu vaccination, and statin decision-making.
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INSIGHT

Demand Primary Studies Not Just Doctor Opinions

  • Expert opinions rank lowest in evidence hierarchy; demand primary sources and peer-reviewed studies.
  • Greger recommends downloading PDFs and checking original papers rather than trusting conflicting doctor opinions.
INSIGHT

Lower LDL As Much As Possible Appears Safe

  • Very low LDL cholesterol appears safe and beneficial; lower is better for longer.
  • PCSK9 inhibitors have driven LDL into single digits without the predicted hormone-related harms.
ADVICE

Buy Purple Kale For Anthocyanin Boost

  • Buy purple (red) kale when available because anthocyanins add berry-like phytonutrients to greens.
  • Michael Greger notes anthocyanins associate with improved cognition and combine benefits of berries and greens.
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