Tolerable upper intake level

Tolerable Upper Intake Level (UL) is the highest level of daily nutrient intake that is likely to pose no risk of adverse health effects for almost all individuals in the general population. As intake increases above the UL, the potential risk of adverse effects increases.

Definition

The Tolerable Upper Intake Level (UL) is a measure used by various nutrition and health organizations to set the maximum amount of a vitamin or mineral that can be consumed in a day without risk of an overdose or serious side effects. The UL is not a recommended level of intake, but rather a cautionary boundary. It is not intended to be a level that people should aim to reach, but rather a limit that they should stay below.

Determining the UL

The UL is determined by reviewing the results of research studies and clinical trials. The Institute of Medicine (IOM) in the United States has established ULs for several vitamins and minerals. The process involves determining the highest level of daily nutrient intake that is likely to pose no risk of adverse health effects for almost all individuals in the general population. As intake increases above the UL, the potential risk of adverse effects increases.

Use of the UL

The UL is used by health professionals to guide their recommendations for nutrient intake. It is also used by policy makers to establish guidelines and regulations for nutrient content in foods and dietary supplements. The UL is also used by individuals to help guide their own dietary choices.

See also

• Dietary Reference Intake
• Recommended Dietary Allowance
• Dietary Guidelines for Americans
• Food and Nutrition Board
• Institute of Medicine

References

Tolerable upper intake level Resources
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