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Estimation of total antioxidant capacity in US diet and dietary supplements
Author(s) -
Yang Meng,
Chung SangJin,
Chung Chin Eun,
Song Won O.,
Chun Ock K.
Publication year - 2010
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.24.1_supplement.560.1
Subject(s) - food science , vitamin c , medicine , antioxidant , vitamin e , antioxidant capacity , population , nutrient , micronutrient , dietary reference intake , proanthocyanidin , environmental health , polyphenol , biology , biochemistry , ecology , pathology
Given the importance of dietary antioxidants in reducing the risks of chronic diseases, this study aimed to estimate the total antioxidant capacity (TAC) level in U.S. diet and supplements. We utilized the USDA flavonoid and proanthocyanidin databases, dietary supplement data and food consumption data of 8,809 U.S. adults aged ≥ 19 yrs in NHANES 2001–2002. Previously measured vitamin C equivalent antioxidant capacity of 43 antioxidant nutrients was also applied. Daily total TAC level averaged 493.4±19.7 mg VCE/d (77% from diet, 23% from supplements). Energy‐adjusted daily TAC level was higher in women, older adults, Caucasian (except for dietary carotenes), non‐alcohol consumers (for vitamin E, carotenes and proanthocyanidins), smokers (for vitamin E), subjects with higher income, and higher exercise levels than their counterpart (p<0.05). Dietary TAC was positively associated with the daily consumption of fruit and fruit juice, vegetables and vegetable products, beverages, wines and teas (p<0.001). Teas, dietary supplements, and fruits and fruit juices were the major sources of TAC of US population (28%, 23%, 17%, respectively). Our study indicates that antioxidant intake from various diet and dietary supplements contributes to total TAC. TAC levels are different in sociodemographic subgroups of the US population. The relationship between TAC and risks of chronic disease needs further investigation. Grant Funding Source : American Heart Association