Subject index ingestion

Studies were conducted in Japan to assess the long-term effect of DAG ingestion on humans. Nagao et al. (14) examined the effects of the long-term ingestion of dietary DAG in a double-blind controlled study of human lipid metabolism. Healthy men [n = 38,27-49 y old, with a body mass index (BMl) ranging from 21.8 to 27.4 kg/m ] were enrolled in the study. To accustom the subjects to the test diets be-... 

One index of the possible requirement for tocopherol by man may be obtained by determining what amounts are needed by a depleted subject to raise the plasma tocopherol and lower the peroxide hemolysis. This problem is made difficult by the fact that any judgment of the peroxide hemolysis or level of plasma tocopherol which is made immediately after the ingestion of a-tocopherol is partially invalidated by the ability of small amounts of tocopherol to remain in the blood stream for several days after ingestion. It takes more than 4 days for a single dose of tocopherol to reach a plateau... 

In this section, we will discuss the use of radionuclide tracers in a metabolic index study. This subject is related to the subjects discussed in our section on cycling (Section 10.2), which included ingestion, biological uptake and retention, and excretion. However, we included in that section references wherein the investigators were interested in a specific radionuclide or its stable isotope. We will consider here cases in which the specific tracer was not of concern, but rather was used as a means to an end. 

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