Low intakes of vegetables and fruits, especially citrus fruits, lead to inadequate vitamin C intakes among adults

Taylor, Christopher A.; Hampl, Jeffrey S; Johnston, Carol S.

doi:10.1038/sj.ejcn.1601059

Cited by 50 publications

(26 citation statements)

References 20 publications

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“…But recently investigators observed inadequate vitamin C intakes in the general population and described the consequences for human health. 8,9 Nishida et al 9 demonstrated, that a decreased vitamin C intake is a contributing risk factor for periodontal disease, especially in smokers. Numerous epidemiological studies have shown that smokers have a higher prevalence and severity of periodontitis when compared to non-smokers.…”

Section: Introductionmentioning

confidence: 99%

Grapefruit consumption improves vitamin C status in periodontitis patients

2005

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Section: Introductionmentioning

confidence: 99%

Grapefruit consumption improves vitamin C status in periodontitis patients

2005

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“…Furthermore, 74.4% of adults had zinc intakes less than half the RDI, 52% had low b-carotene intakes, 44% had low riboflavin intakes and 34% had low vitamin C intakes. Low micronutrient intakes have also been reported by other Indian studies (2) and in Western populations (26,27). The present study group was lactovegetarian, with low consumption of vegetables (66945 g day (1 ) and fruit (66945 g day (1 ), and also of milk and milk products (86967 g day (1 ).…”

Section: Discussionmentioning

confidence: 49%

Association of micronutrient status with subclinical health complaints in lactovegetarian adults

Chiplonkar¹,

Agte²

2007

Food & Nutrition Research

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Background: Micronutrient malnutrition has many adverse effects on human health, not all of which may be clinically evident. Objective: To explore linkages between subclinical health complaints and micronutrient status in lactovegetarian Indian adults. Design: Health was assessed in 502 lactovegetarian adults (275 men, 227 women, aged 30.699 years) using a structured questionnaire for existing complaints with severity of symptoms on a four-point scale and morbidity over the preceding month. Subjects were categorized as having no complaints (NC), or complaints of mild (MI) or moderate (MD) degree, using cluster analysis. Diet was recorded by a semi-quantitative food frequency questionnaire and nutrient intakes were computed using standard databases. Levels of haemoglobin, vitamin C, retinol, ceruloplasmin, riboflavin (EGRAC), folic acid, vitamin B 12 and erythrocyte membrane zinc (RBCMZn) in blood were estimated. Results: Health complaints of a mild and moderate degree were observed in 30.5% and 24.7% of the subjects, respectively. Average dietary intakes of b-carotene, riboflavin, iron and zinc were observed to be only about half of the recommended dietary intakes. There was a decreasing trend in micronutrient intakes from NC to MD. Intakes of iron, zinc, niacin and thiamin of men from the MI group tended to be lower than in the NC group (pB0.1). Men from the MD group had significantly lower intakes of calcium, zinc and riboflavin than those from the NC group (p B0.05). The intakes of these nutrients in women from NC, MI and MD were not significantly different. Multinomial logistic regression of health status revealed that plasma vitamin C and RBCMZn were negatively associated with MD and RBCMZn with MI. Conclusions: The study indicates a need to increase micronutrient intakes of vegetarian populations, especially regarding vitamin C and zinc for maintenance of health.

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“…In contrast, marginal ascorbate deficiency, a condition caused by suboptimal vitamin C intake, is much more prevalent. Estimates suggest that > 20% of the UK population and 30%-40% of US adults are affected by subclinical ascorbate deficiency (20,35,42,51). Because this condition is neither associated with overt clinical symptoms nor routinely assessed, its health implications have long been underappreciated.…”

Section: Innovationmentioning

confidence: 99%

Nitroso-Redox Status and Vascular Function in Marginal and Severe Ascorbate Deficiency

Garcia-Saura

Saijo²,

Bryan³

et al. 2012

Antioxidants & Redox Signaling

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Marginal vitamin C (ascorbic acid) deficiency is a prevalent yet underappreciated risk factor for cardiovascular disease. Along with glutathione, ascorbate plays important roles in antioxidant defense and redox signaling. Production of nitric oxide (NO) and reactive oxygen species and their interaction, giving rise to nitroso and nitrosyl product formation, are key components of the redox regulation/signaling network. Numerous in vitro studies have demonstrated that these systems are interconnected via multiple chemical transformation reactions, but little is known about their dynamics and significance in vivo. Aims: We sought to investigate the time-course of changes in NO/redox status and vascular function during ascorbate depletion in rats unable to synthesize vitamin C. Results: We here show that both redox and protein nitros(yl)ation status in blood and vital organs vary dynamically during development of ascorbate deficiency. Prolonged marginal ascorbate deficiency is associated with cell/tissue-specific perturbations in ascorbate and glutathione redox and NO status. Scurvy develops earlier in marginally deficient compared to adequately supplemented animals, with blunted compensatory NO production and a dissociation of biochemistry from clinical symptomology in the former. Paradoxically, aortic endothelial reactivity is enhanced rather than impaired, irrespective of ascorbate status. Innovation/Conclusion: Enhanced NO production and protein nitros(yl)ation are integral responses to the redox stress of acute ascorbate deprivation. The elevated cardiovascular risk in marginal ascorbate deficiency is likely to be associated with perturbations of NO/redox-sensitive signaling nodes unrelated to the regulation of vascular tone. This new model may have merit for the future study of redox-sensitive events in marginal ascorbate deficiency. Antioxid. Redox Signal. 17, 937-950.

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Low intakes of vegetables and fruits, especially citrus fruits, lead to inadequate vitamin C intakes among adults

Cited by 50 publications

References 20 publications

Grapefruit consumption improves vitamin C status in periodontitis patients

Grapefruit consumption improves vitamin C status in periodontitis patients

Association of micronutrient status with subclinical health complaints in lactovegetarian adults

Nitroso-Redox Status and Vascular Function in Marginal and Severe Ascorbate Deficiency

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