Many Americans regularly consume a multitude of dietary supplements, often influenced by media and social platforms. While supplements can serve specific needs like nutrient deficiencies or pregnancy, experts warn that many popular options are unnecessary and potentially risky.

Dr. JoAnn Manson, a Harvard Medical School professor, emphasizes that supplements can contain contaminants or excessive nutrients, and may interact with medications. She advises prioritizing whole foods for essential nutrients whenever possible.

Here are ten common supplements and recommended dietary alternatives:

1. Multivitamins: While beneficial for specific groups like older adults or those with restrictive diets, most individuals can obtain necessary vitamins and minerals from a balanced diet rich in fruits, vegetables, legumes, nuts, seeds, whole grains, and lean proteins.

2. Magnesium: Touted for sleep, migraines, and mood, evidence for supplements is limited. Magnesium-rich foods like pumpkin seeds, almonds, spinach, black beans, and quinoa offer a natural alternative.

3. Probiotics and Prebiotics: The evidence supporting these gut-health supplements for the general population is weak. Fermented foods such as kimchi, sauerkraut, yogurt, kefir, and miso, along with fiber-rich whole foods, are better choices for a healthy microbiome.

4. Fish Oil: While omega-3 fatty acids from fatty fish like salmon and mackerel are linked to heart health and reduced dementia risk, supplements have shown mixed results. Including two servings of fatty fish weekly or consuming flax seeds and walnuts provides omega-3s.

5. Vitamin C: Essential for immunity and wound healing, daily recommended amounts are easily met through dietary sources like oranges, kiwis, broccoli, and red bell peppers.

6. Collagen: Claims of reducing wrinkles and joint pain lack strong evidence. Natural collagen synthesis is supported by adequate protein, vitamin C, copper, and zinc from a balanced diet.

7. Vitamin B12: Crucial for those with deficiencies or at risk (vegans, certain medical conditions), most adults can get sufficient B12 from fish, red meat, poultry, eggs, dairy, or fortified cereals and plant-based milks.

8. Protein Powder: For most individuals following a balanced diet, protein powder is unnecessary. Including a protein source at each meal, such as Greek yogurt, eggs, legumes, or lean meats, ensures adequate intake.

9. Fiber: Most Americans fall short of daily fiber recommendations. While supplements can help, obtaining fiber from whole foods like legumes, nuts, whole grains, fruits, and vegetables is preferred for their added nutrients. Psyllium fiber supplements may aid digestive issues if dietary intake is insufficient.

10. Greens Powder: These powders are often described as "glorified multivitamins" and do not replace the nutritional benefits of whole fruits and vegetables. Spending money on fresh or frozen produce is a more effective and economical approach.