What does tolerable upper intake level mean?

The tolerable upper intake levels (UL) for various nutrients are defined as “the highest level of daily nutrient intake that is likely to pose no risk of adverse health effects to almost all individuals in the general population.” As intake increases above these upper levels, the risk of harmful effects increases. Tolerable upper intake levels were calculated by the Institute of Medicine for specific age groups because both the daily needs and the tolerance of excess nutrients vary depending on body size and specific nutritional requirements.
Dariush Mozaffarian, MD
Internal Medicine
Tolerable upper intake level (UL) is the maximum amount of a nutrient it is safe to consume for an extended period. The more a person exceeds the UL, the greater the potential risk of adverse effects.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.