Urinary excretion of vitamin B12 depends on urine volume in Japanese female university students and elderly.

@article{Fukuwatari2009UrinaryEO,
  title={Urinary excretion of vitamin B12 depends on urine volume in Japanese female university students and elderly.},
  author={Tsutomu Fukuwatari and Ema Sugimoto and Tomiko Tsuji and Junko Hirose and Tomiho Fukui and Katsumi Shibata},
  journal={Nutrition research},
  year={2009},
  volume={29 12},
  pages={
          839-45
        }
}
Recent studies have shown that urinary excretion of water-soluble vitamins reflects their intake in humans. However, some have reported that physical characteristics and urine volume may affect the amount of vitamin compounds found in urine. We hypothesized that physical characteristics and urine volume could affect urinary excretion of B-group vitamins. Twenty-four-hour urine samples were collected from 186 free-living Japanese women aged 19 to 21 years and 104 free-living Japanese subjects… CONTINUE READING

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