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Background: Iron deficiency is common in obese subjects. This may be due to an increase in serum hepcidin and a decrease in iron absorption from adiposity-related inflammation.
A major limitation in the use of stable isotope of water in ecological studies is the time that is required to extract water from soil and plant samples. Using vacuum distillation the extraction time ...
Stable isotope ratios of carbon and nitrogen (expressed as S^C and WN)are used in food web studies to trace sources of these elements when sources differ in their natural stable isotope abundance. I...
Background:Strategies for improving the vitamin A status of vulnerable populations are needed.Objective:We studied the influence of the amounts of dietary fat on the effectiveness of carotene-rich pla...
Background: The use of stable isotopes has provided valuable insights into iron absorption in humans, but the data have been limited to nonheme iron. Objective: Our objectives were to produce heme iro...
Background:The World Health Organization recommends exclusive breastfeeding until age 6 mo. Studies relying on mothers' self-reported behaviors have shown that lactation counseling increases both the ...
previous studies have shown that non-digestible inulin-type fructan intake can increase intestinal mineral absorption in both humans and animals. However, this stimulatory effect on intestinal absorpt...
The double-labeling (DL) method for determining magnesium absorption is less cumbersome than is the fecal monitoring method, which has been used most often, but it has not been validated.
In a group of well-nourished, normal-weight Chinese men following low-vitamin A diets, 4.5 mg spirulina β-carotene consumed with 22 g fat has the same vitamin A activity as does 1 mg retinyl acetate.
The influence of protein source on postprandial urea kinetics is poorly understood, despite its nutritional significance with respect to nitrogen homeostasis. Furthermore, traditional tracer infusion ...
An enhancing effect of short-chain fructooligosaccharides (scFOSs) on intestinal calcium absorption has been shown in animals and in some short-term human studies. However, the long-term effect of scF...
The objective was to compare a dual-isotope method combining radioisotopes and stable isotopes with a whole-body radioisotope retention method for measuring calcium absorption.
The quantitative determination of the conversion of β-carotene to vitamin A in humans can be accomplished by using a stable-isotope reference method. This approach provides in vivo metabolic informati...

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