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National Institutes of Health Office of Dietary Supplements: “Vitamin D,” “Probiotics,” “Multivitamin/mineral Supplements,” “Omega-3 Fatty Acids,” “Vitamin C,” “Magnesium,” “Vitamin B12.”
BMC Public Health: "Vitamin D levels and deficiency with different occupations: a systematic review."
The New England Journal of Medicine: "Vitamin D Deficiency -- Is There Really a Pandemic?" "Vitamin D Supplements and Prevention of Cancer and Cardiovascular Disease," "Vitamin D Supplementation and Prevention of Type 2 Diabetes."
Harvard Health Publishing: “Vitamin D: What’s the “right” level?” “Should you take probiotics?” “Fish oil: friend or foe?” “What you need to know about calcium,” “The latest on glucosamine/chondroitin supplements,” “By the way, doctor: What's the right amount of vitamin C for me?” “Vitamin B12 deficiency can be sneaky, harmful.”
JAMA Cardiology: "Vitamin D Supplementation and Cardiovascular Disease Risks in More Than 83 000 Individuals in 21 Randomized Clinical Trials."
The American Journal of Clinical Nutrition: "Randomized controlled trial of vitamin D supplementation in older people to optimize bone health."
The Lancet: "Effects of vitamin D supplementation on musculoskeletal health: a systematic review, meta-analysis, and trial sequential analysis."
Journal of the American Medical Association: "Effect of Vitamin D and Calcium Supplementation on Cancer Incidence in Older Women: A Randomized Clinical Trial."
The University of Texas MD Anderson Cancer Center: “Should you take a daily probiotic supplement?”
Annals of Internal Medicine: "Enough Is Enough: Stop Wasting Money on Vitamin and Mineral Supplements," "Association Among Dietary Supplement Use, Nutrient Intake, and Mortality Among U.S. Adults: A Cohort Study," "Meta-analysis: high-dosage vitamin E supplementation may increase all-cause mortality."
Mayo Clinic: “Nutrition and healthy eating,” “Coenzyme Q10,” “Mayo Clinic Minute: Are there health benefits to taking turmeric?” “Are vitamin B-12 injections helpful for weight loss?”
Journal of the American Association of Nurse Practitioners: "Fiber supplements and clinically proven health benefits: How to recognize and recommend an effective fiber therapy."
MedlinePlus: “Dietary Fiber.”
American Heart Association: “Fish and Omega-3 Fatty Acids.”
National Institutes of Health National Center for Complementary and Integrative Health: “Omega-3 Supplements: In Depth,” “Melatonin: In Depth,” “Coenzyme Q10,” “Turmeric.”
Johns Hopkins Medicine: “Calcium Supplements: Should You Take Them?” “Melatonin for Sleep: Does It Work?”
National Institutes of Health Osteoporosis and Related Bone Diseases National Research Center: “Exercise for Your Bone Health.”
American Academy of Family Physicians: “Glucosamine.”
Arthritis Foundation: “Chondroitin Sulfate and Glucosamine Supplements in Osteoarthritis.”
Journal of the American Medical Directors Association: "Clinical Use of Curcumin in Depression: A Meta-Analysis."
Acta Medica Indonesiana: "The effect of curcumin on lipid level in patients with acute coronary syndrome."
National Center for Complementary and Integrative Health: “Melatonin: In Depth,” “5 Tips: What Consumers Need to Know About Dietary Supplements.”