Nutrition · Module 13 · Nutrition across the life cycle

Life Cycle Lab

Slide from pregnancy to older age and watch needs rise and fall, step through the weeks of pregnancy, practise life-stage calculations with animated worked solutions, sort the big ideas and work through real-life cases. Nothing here is graded.

Part 1: Life Stage Explorer

Bars compare each need with an adult aged 19 to 30 of the same sex (the dashed 100% line).
Higher than the adult reference Lower than the adult reference Adult reference (100%)
Needs at this life stage
NutrientNeedvs adult

Values are Dietary Reference Intakes (RDA, or AI for infants and choline). Energy values are rough population estimates for a moderately active person, not personal targets; real needs vary widely. Per kg view uses DRI reference body weights (pregnancy and lactation use the pre-pregnancy weight). Pregnancy and lactation values are for ages 19 to 30.