I do have a hard time with the notion that the only practical way to test vit A is in the plasma and yet, it is not reflective of tissue stores. Therefore how can we know that there is a vit A toxicity?
Peat put a lot of importance on calcium. I suppose no importance is given to it here?
Why apple juice or white grape juice and not OJ?
Most people know once they go zero A. Your body will usually tell you. But you can track your serum levels over time, they usually go up in the first months. Seurm level is reflective of tissue stores relative to previous measurement of the same person.
Calcium is probably important in the first years of avoiding vA, at least for some. It's all pretty individual. There's high calcium water, and I suppose if you come from a Peat background, drinking some low-fat milk would be a possibility. Most people drop the milk, as recommended by Genereux and Smith.
I drink calcium water with around 350mg of calcium per liter.
Oranges are reasonably high in carotene. Eating an orange is not a big problem, but drinking the juice daily is.
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