Nutritional Status of Vitamin E in a Healthy Elderly Population in Japan

Saito, Morio; Kobatake, Yoshiki; Tsuchida, Masako; Kuroda, Keiichi; Innami, Satoshi; Itoh, Roichi

doi:10.3164/jcbn.4.149

Cited by 4 publications

(3 citation statements)

References 30 publications

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“…However, inadequate dietary vitamin A intake closely parallels low serum retinol levels [17]. In other words, the serum retinol concentration reflects prolonged dietary vitamin A intake [18].…”

Section: Discussionmentioning

confidence: 99%

Fat-Soluble Vitamin Status Is Not Affected by Diacylglycerol Consumption

et al. 2001

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Objective: The objective of this study was to examine the effect of dietary diacylglycerol (DAG) on the bioavailability of fat-soluble vitamins in comparison with triacylglycerol (TAG). Methods: We conducted a long-term administration test of DAG and TAG in 27 healthy men aged 27–47 years. After measuring baseline values, subjects were randomized into two groups, one group (n = 15) was given DAG and the other (n = 12) was given TAG. Subjects ingested 20 g of DAG or TAG either in mayonnaise or an emulsion drink of their own choice at meals once a day for 12 weeks. At 4, 8 and 12 weeks, fasting blood samples were drawn and serum levels of vitamin A, E, and D were measured. Results: There were no significant changes in vitamin A levels throughout the study period. Compared to the initial values (using a Student’s t test for paired values), significant differences of vitamin E and D were seen at some points during the experiment. According to a two-way repeated measures analysis of variance, however, DAG and TAG (lipid) and time had no effect on fat-soluble vitamin levels. Conclusions: Our results indicate that DAG does not affect the absorption of the fat-soluble vitamins in diets.

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Section: Discussionmentioning

confidence: 99%

Fat-Soluble Vitamin Status Is Not Affected by Diacylglycerol Consumption

et al. 2001

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“…[102] Although supplement users tend to have higher levels of serum retinol than non-users, biochemical deficiency of retinol is unusual even in non-users. [87][88][89][90][91][92][93][94][95][96][97][98][99][100][101][102][103] Minor differences in serum retinol levels between the sexes have been reported [94] but not consistently. [87,89,90] ~-Carotene status was also evaluated in several of the nutritional surveys previously mentioned.…”

Section: Retinol Status and Supplement Use In The Elderlymentioning

confidence: 99%

“…adjuvant) even when retinol status is ' normal' )"3,"4] This question of adjuvancy is critical since the vast majority of the elderly have normal serum retinol levels [87][88][89][90][91][92][93][94][95][96][97][98][99][100][101][102][103] and excellent liver stores. !…”

Section: Retinol As An Immune Adjuvantmentioning

confidence: 99%

Retinol (Vitamin A) Supplements in the Elderly

Ward

1996

Drugs & Aging

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Aging is associated with many changes in epithelial tissues, immune function and haematopoiesis-myelopoiesis. There is increasing evidence that retinoids can significantly influence some of these changes. Retinoids may also have anticancer effects and protect against age-associated conditions such as macular degeneration. However, retinol (vitamin A) can be toxic when taken in excess and the elderly may be at particular risk for hypervitaminosis A. Evaluation of elderly people ingesting significantly more or less than the recommended daily intake of retinol requires an understanding of the biology of retinoids and consideration of the relative risks and benefits of supplementation.

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