Tag: Upper intake limit

According to the National Institutes of Health, the tolerable upper intake level (UL) for zinc is 40 milligrams (mg) per day for adults. Exceeding this amount, especially through long-term supplement use, can lead to negative health effects, though it's rare to get too much zinc from food alone. This guide explains what you need to know about consuming too much zinc.

According to the NIH Office of Dietary Supplements, the recommended dietary allowance (RDA) for vitamin E is 15 mg per day for adults, while the tolerable upper intake level (UL) for supplements is 1,000 mg per day. Though a powerful antioxidant, exceeding this limit, particularly through supplements, can lead to adverse health effects, including a heightened risk of bleeding.

According to the National Institutes of Health, the tolerable upper intake level (UL) for vitamin C in adults is 2,000 mg per day. While the body typically excretes excess amounts of this water-soluble vitamin, consuming doses above this threshold, mainly from supplements, can lead to unpleasant side effects and, in rare cases, prompt vitamin C toxicity.

Over 80 countries have implemented folic acid fortification programs to prevent neural tube defects, a public health success. However, this widespread availability raises a new concern: are there side effects to too much folic acid? For the general population, exceeding the tolerable upper intake level (UL) of 1,000 mcg per day can lead to serious health issues, especially masking a critical vitamin B12 deficiency.