Calculateur de Vitamine D — Formule
## Vitamin D Requirement Estimation
Vitamin D requirements vary by age, body weight, and sun exposure. The RDA is 600 IU for ages 1-70 and 800 IU for those over 70.
### Adjusted Formula
**Vitamin D (IU) = Base IU x Sun Factor x (Weight / 150)**
This adjusts the base RDA for body size and sun exposure, since vitamin D is produced in the skin when exposed to sunlight.
Vitamin D requirements vary by age, body weight, and sun exposure. The RDA is 600 IU for ages 1-70 and 800 IU for those over 70.
### Adjusted Formula
**Vitamin D (IU) = Base IU x Sun Factor x (Weight / 150)**
This adjusts the base RDA for body size and sun exposure, since vitamin D is produced in the skin when exposed to sunlight.
Exemple Résolu
A 35-year-old, 170 lbs, with moderate sun exposure.
- Base IU (age <= 70) = 600
- Adjusted = 600 x 1.0 x (170 / 150)
- = 600 x 1.133 = 680 IU/day
- In mcg = 680 / 40 = 17.0 mcg