define the terms adequate intake and tolerable upper intake level

Adequate Intake (AI): A type of Dietary Reference Intake (DRI) that is established when there is not enough evidence to set a Recommended Dietary Allowance (RDA). It is meant to ensure that an individual consumes enough of a nutrient to maintain good health. Tolerable Upper Intake Level (UL): The highest estimated level of a nutrient that is likely to pose no risk of adverse health effects in almost all individuals in the general population. It is not intended as a goal for daily intake, but as a guideline to help people avoid consuming too much of a nutrient.

Adequate Intake (AI): The adequate intake level is the recommended daily amount of a nutrient believed to be sufficient to meet the needs of most individuals in a given life stage or gender group, for which an Estimated Average Requirement (EAR) has not been established. Tolerable Upper Intake Level (UL): The tolerable upper intake level is the highest level of daily nutrient intake that is likely to pose no risk of adverse health effects in almost all individuals in the general population. As intake increases above the UL, the risk of adverse effects increases.