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CL Answer

What are trace minerals and do I need them?

Trace minerals include boron, chromium, copper, iodine, iron, manganese, molybdenum, nickel, zinc, and others. Find out what they do, how much of each trace mineral you should be getting, and who's most likely to be deficient in these minerals.

Trace Minerals - What are they and do you need them?

Product Review

Zinc Supplements, Lozenges, and Melts Review

Find the Best Zinc Supplements, Including Lozenges for Colds.

Zinc Review 2024

CL Answer

Do supplements help with Parkinson’s disease treatment or prevention?

Learn what has been shown with vitamins D and E, niacin, CoQ10, melatonin, creatine, SAMe, NAC, valerian, CoQ10, and CBD, as well as with coffee and the Mediterranean and MIND diets for treating and/or preventing Parkinson's disease.

Elderly man with parkinsons holding trembling hand while eating

CL Answer

Do any supplements or foods benefit people with Crohn's disease? Are there any supplements that should be avoided?

Find out the most common vitamin and mineral deficiencies in people with Crohn's disease, including iron, B6, B12, vitamin D, zinc and others, plus evidence for N-acetyl-glucosamine (NAG), fish oil, and curcumin.

Supplements for Crohn's Disease -- Crohn's Disease Written on Notepad, Pills

CL Answer

Are people with kidney disease at risk of getting too much potassium if they take a multivitamin? Which multivitamins are best for people with kidney disease?

Learn if people with kidney disease are at increased risk of getting too much potassium from multivitamins, find out which multivitamins do not contain potassium, and learn what other products should be avoided by people restricting potassium intake.

Multivitamins on pharmacy shelf

Clinical Update

8/09/2022

Vitamin E for Fatty Liver Disease?

Can vitamin E improve liver health in people with non-alcoholic fatty liver disease (NAFLD)? Get the details in the Liver Disease section of our Vitamin E Supplements Review.

Also see our CL Answer about Supplements for Fatty Liver Disease.

Clinical Update

10/25/2022

Vitamin D for Gum Disease?

Does supplementing with vitamin D help treat gum disease? Find out what research suggests in the Periodontal Disease section of our Vitamin D Supplements Review.

Also, see our article about supplements for gum disease or periodontitis.

Clinical Update

10/28/2022

Zinc Deficiency & Bowel Disease

A recent study showed zinc deficiency to be extremely common among people with Crohn’s disease and ulcerative colitis (the most common forms of inflammatory bowel disease or IBD). Find out more and if zinc supplements may help in the Zinc deficiency section of our Zinc Supplements Review.

Learn more about supplements for Crohn's disease and ulcerative colitis.