In the supplement mission, we state the "Upper Intake Level" (UL) for zinc, iron, and copper while in the Meal Plan section, we're talking about the "Recommended Daily Allowance" (RDA)​. Here is the difference: RDA is the amount of a nutrient you should aim to get daily to stay healthy. Think of it as your target. For example, the RDA for zinc for adult women is 8 mg/day, which is enough to keep your body running smoothly. UL is the maximum amount you can safely take each day without running into side effects. It’s like a limit you shouldn’t go over. For zinc, the UL is 40 mg/day, and going beyond that regularly could cause problems, like nausea or messing with other nutrients like copper. It’s kind of like drinking water: the RDA is the amount you need to stay hydrated, while the UL is the point where drinking too much could actually become harmful. Stick between those, and you’re good to go!