RDA often assumes a healthy Caucasian, of normal weight, who gets exercise, does not smoke, does not have Cancer, eats good food, etc. etc.
- Which Nutrition Chart Should You Rely Upon: The RDA, RDI, AI, EAR or DV? Sept 2011
- US RDA/RDI and UL for virtually ALL nutrients Consumerlab
Does not seem to have a single item for humans which is based on weight,
vs Veterinarians base virtually all supplementation on weight or amount of food eaten