Dr. John McDougall presents Vitamin D Supplements are Harmful, Industry and the US Dietary Guidelines at the September, 2015, Advanced Study Weekend in Santa Rosa, California. More info: carbohydratescholesterolDiabetesDietaryFATGuidelinesHarmfulHealthyhearthypertensionindustryIntroductionJohn A. McDougall (Author)Medicine (Field of Study)Nutrition (Medical Specialty)Physician (Profession)Plant BasedstarchstarchivoresupplementsveganvegetarianvideoVITAMINVitamin DVitamin SupplementsvlogYouTubeRelated Posts Chasing the sun and vitamin D during cloudy Indiana winters January 13, 2026 Warning: this dietary supplement may be linked to higher risk of stroke and heart disease January 13, 2026 Best Hair Regrowth Formula 2026 (BioGrow RX): Consumer Report Compares Biotin Supplements to Topical Treatments January 13, 2026 Supplements not always the answer January 13, 2026 Wearable data transforms supplement recommendations January 13, 2026 Build a Wellness-Focused Pantry With These Editor-Approved Essentials January 12, 2026
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