Urinary Excretion

As noted earlier, the amount of riboflavin excreted in the urine is negligible at low intakes of the vitamin. As the dietary level rises there is slow increase to a transition point, above which the slope of the excretion rate increases very sharply, and then remains proportional to intake until absorption is saturated. For population studies it has been found convenient to use the creatinine excretion rate as the denominator, and the suggested interpretation of urinary riboflavin excretion rates is: <27 mg riboflavin perg creatinine for deficient; 27-79 mgg"1 for low; and >80 mgg"1 for acceptable. Detailed studies of the relation between intake and excretion rate have recently shown that this index is sufficiently sensitive to distinguish riboflavin requirements between people on low-fat, high-carbohydrate diets and the slightly higher requirement associated with high-fat, low-carbohydrate diets. Metabolic states associated with general tissue catabolism can sometimes result in liberation of riboflavin during cell turnover; this increases its urinary excretion, even though dietary intake may be low.

Atkins Low Carb Diet Recipes

Atkins Low Carb Diet Recipes

The Atkins Diet is here. Dr Atkins is known for his great low carb diets. Excluding, Dr Atkins carb counter and Dr Atkins New Diet Revolution.

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