Fish as a major source of vitamin D in the Japanese diet

Nakamura, Kazutoshi; Nashimoto, Mitsue; Okuda, Yoko; Ota, Tomoko; Yamamoto, Masahiro

doi:10.1016/s0899-9007(02)00751-7

Cited by 81 publications

(49 citation statements)

References 5 publications

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“…Holick (2004) indicated that over 90% of the vitamin D requirement comes from casual exposure to sunlight. Of course, blood levels of 25-hydroxyvitamin D partly reflect dietary intake of vitamin D (Nakamura et al, 2000(Nakamura et al, , 2002, although our results did not show a positive correlation between dietary and plasma vitamin D levels, partly due to the low validity of the food frequency questionnaire. Spearman's correlation coefficients between dietary records and estimates from the food frequency questionnaire were 0.26 for men and 0.38 for women in Cohort I; 0.32 for men and 0.28 for women in Cohort II, assessed by volunteers from our cohorts (Ishihara et al, 2006).…”

Section: Discussioncontrasting

confidence: 79%

“…Female controls in the lowest quartile of plasma 25-hydroxyvitamin D consumed more alcoholic beverages than other quartiles. Food and nutrient intakes were not associated with plasma 25-hydroxyvitamin D except n-3 polyunsaturated fatty acid intake in women, which is contained in fish, a major source of dietary vitamin D in the Japanese population (Nakamura et al, 2002). Dietary vitamin D did not correlate with plasma 25-hydroxyvitamin D in either men or women.…”

Section: Resultsmentioning

confidence: 83%

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Plasma vitamin D and risk of colorectal cancer: the Japan Public Health Center-Based Prospective Study

Otani¹,

Iwasaki²,

Sasazuki³

et al. 2007

Br J Cancer

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We investigated the association between plasma 25(OH)D and the subsequent colorectal cancer incidence risk by a nested casecontrol study in The Japan Public Health Center-based Prospective Study, covering 375 newly diagnosed cases of colorectal cancer from 38 373 study subjects during a 11.5-year follow-up after blood collection. Two controls were matched per case on sex, age, study area, date of blood draw, and fasting time. In a conditional logistic regression model with matched pairs adjusted for smoking, alcohol consumption, body mass index, physical exercise, vitamin supplement use, and family history of colorectal cancer, plasma 25(OH)D was not significantly associated with colorectal cancer in men or in women. However, the lowest category of plasma 25(OH)D was associated with an elevated risk of rectal cancer in both men (odds ratio (OR), 4.6; 95% confidence interval (CI), 1.0 -20) and women (OR, 2.7, 95% CI, 0.94 -7.6), compared with the combined category of the other quartiles. Our results suggest that a low level of plasma 25(OH)D may increase the risk of rectal cancer. Ecologic studies have reported that sunlight or solar ultraviolet B exposure is inversely associated with the risk of colorectal cancer incidence and mortality in the United States (Grant and Garland, 2004;Giovannucci, 2005) and in Japan (Mizoue, 2004). This ultraviolet B is involved in the production of vitamin D from 7-dehydrocholesterol in the skin (Holick, 2004). Vitamin D, which is derived from skin and dietary products or supplemental sources, is catalysed to 25-hydroxyvitamin D in the liver, which is the most useful measure of vitamin D status (Hunter, 1998). The 25-hydroxyvitamin D re-enters the circulation and is converted in the kidney by 25-hydroxyvitamin D-1a-hydroxylate to 1,25-dihydroxyvitamin D, which regulates calcium metabolism through its interaction with its major target tissues, bone and intestine; 25-hydroxyvitamin D is also metabolised in colorectal mucosa for regulation of cellular growth.Several prospective studies reported that 25-hydroxyvitamin D in the blood was inversely associated with colorectal cancer risk (Garland et al, 1989;Braun et al, 1995;Wactawski-Wende et al, 2006), and especially distal colon and rectal cancer (Tangrea et al, 1997;Feskanich et al, 2004). One cohort was used to analyse a small number of cases (Garland et al, 1989;Braun et al, 1995), while others were from specific populations such as Finnish male smokers (Tangrea et al, 1997) and US nurses (Feskanich et al, 2004). Further confirmation is needed from general populations, especially with a different sunlight exposure and skin pigmentation reducing the cutaneous synthesis of vitamin D (Clemens et al, 1982;Matsuoka et al, 1991).We investigated the association between plasma 25-hydroxyvitamin D and the subsequent risk of colorectal cancer in a nested case -control study in a large general population cohort in Japan. MATERIALS AND METHODSThe Japan Public Health Centre-based Prospective Study (JPHC study) is an ongoing cohort study inves...

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Section: Discussioncontrasting

confidence: 79%

Section: Resultsmentioning

confidence: 83%

Plasma vitamin D and risk of colorectal cancer: the Japan Public Health Center-Based Prospective Study

Otani¹,

Iwasaki²,

Sasazuki³

et al. 2007

Br J Cancer

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“…Specifically, Ishinomaki City, where this study was performed, is a famous fishing port in Japan and, therefore, the consumption of fish as a staple is higher than in the other studies. Fish contains high levels of vitamin D, which is important in suppressing the level of intact PTH [18,19]. As well, the level of Hb was lower in our study (a) Cardiac cohort than levels reported in other Japanese cohorts.…”

Section: Discussionsupporting

confidence: 47%

“…Ethical approval All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee at which the studies were conducted (IRB Approval number: [14][15][16][17][18][19][20] and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.…”

Section: Acknowledgementsmentioning

confidence: 99%

Risk of cardiovascular mortality predicted by the serum calcium level and calcification score at the initiation of dialysis

Sato

Nagasawa²,

Saito

et al. 2018

Clin Exp Nephrol

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Background The relationship between serum corrected calcium (CCa) level and vessel calcification at dialysis initiation and survival has seldom been evaluated. Therefore, we evaluated the efficacy of CCa levels and the calcification score at the initiation of dialysis for predicting all-cause and cardiovascular (CV) mortality in patients with end-stage renal disease (ESRD). Methods The study group included 407 patients with ESRD, who started hemodialysis between January 2009 and December 2016 at the Red Cross Ishinomaki Hospital. The primary outcomes were the 1-and 3-year all-cause and CV mortality rate, with the association between CCa level and CVD-specific mortality evaluated using the Kaplan-Meier method and Cox proportional hazard regression analysis. Results Patients with a high initial CCa level were at higher risk for CVD-related, but not all-cause, mortality than patients with a low initial CCa level [hazard ratio (HR) 2.81; 95% confidence interval 1.05-7.55]. The HR for CVD-related mortality was also higher for patients with an Agatston vessel calcification score > 2000 (HR 13.9; 95% CI 1.63-118.2). Overall, the 3-year CVD-free rate was 88.2% (range 76.4-94.3%). Higher CCa level was associated with a higher Agatston score and cardiac valve calcification. Conclusion High serum CCa levels and an Agatston score > 2000 are independent risk factors of CVD mortality due to advanced vessel calcification.

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“…In Japan, the status of vitamin D is relatively better S. Zaman et al Health than other regions of South Asia due to high sea fish consumption [18].…”

Section: Introductionmentioning

confidence: 99%

High Prevalence of Vitamin D Deficiency among Bangladeshi Children: An Emerging Public Health Problem

Zaman¹,

Hawlader²,

Biswas³

et al. 2017

Health

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Background: Recent studies suggested that vitamin D deficiency among children is widespread worldwide. Most of the Asian countries are suffering from high prevalence of vitamin D deficiency, especially in children. However, the vitamin D deficiency of Bangladeshi children has not been investigated yet. The objective of the study was to assess the prevalence of vitamin D deficiency among children in Dhaka city, Bangladesh. Methods: A cross-sectional study was designed. Children aged 0 month to 16 years attended Pediatrics' clinics with minor illness were conveniently recruited. After obtaining informed written consent, venous blood was taken and serum 25(OH)D levels were determined by direct enzyme-linked immunosorbent assay. Descriptive statistics were performed for age, sex, biochemical parameters. Socio-economic status (SES) was estimated using a wealth index, producing a weighted score. Scores were categorized into quintiles, with category 1 representing the poorest and category 5 the richest. Serum 25(OH)D was categorized: deficient as <10 ng/ml, insufficient as 10 -29 ng/ml and sufficient as 30 -100 ng/ml. Results: 31.88% children of 0 -1 year had deficient serum 25(OH)D level and 52.17% children had insufficient level. Among 2 -5 years' group, 38.16% were deficient and 50% were insufficient. Among the 6 -11 years group, 41.02% were deficient and 52.56% were insufficient. Among 12 -16 years group, 46.75% were deficient and 51.95% were insufficient. That means, serum 25-hydroxyvitamin D deficiency and insufficiency rate is found very high among Bangladeshi children. Conclusions: The prevalence of vitamin D deficiency and insufficiency among children in Bangladesh is high. The study recommended that vitamin D supplementation in Bangladeshi children should be formally launched from first day of birth up to adolescence.

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Fish as a major source of vitamin D in the Japanese diet

Cited by 81 publications

References 5 publications

Plasma vitamin D and risk of colorectal cancer: the Japan Public Health Center-Based Prospective Study

Plasma vitamin D and risk of colorectal cancer: the Japan Public Health Center-Based Prospective Study

Risk of cardiovascular mortality predicted by the serum calcium level and calcification score at the initiation of dialysis

High Prevalence of Vitamin D Deficiency among Bangladeshi Children: An Emerging Public Health Problem

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