Tea consumption is inversely associated with weight status and other markers for metabolic syndrome in US adults

Abstract

Purpose Tea (Camellia sinensis) is a widely consumed beverage, and laboratory and some intervention studies have indicated the potential health benefits of hot tea. The present study examines the association between tea consumption (evaluating hot and iced tea independently) and markers for MetS adults in a sample of 6,472 who participated in the 2003–2006 National Health and Nutrition Examination (NHANES) surveys. Methods Tea consumption was evaluated using food frequency questionnaires and 24-hour dietary recalls. Seventy percent of the sample reported any consumption of iced tea, and 16% were daily consumers; whereas approximately 56% of this sample reported hot tea consumption and 9% were daily consumers. Results Hot tea consumption was inversely associated with obesity: tea consumers had lower mean waist circumference and lower BMI (25 vs. 28 kg/m2 in men; 26 vs. 29 kg/m2 in women; both P<0.001), than non-consumers after controlling for age, physical activity, total energy intake, and other confounders. For iced tea consumption, the association was reversed: increased iced tea consumption was associated with higher BMI, greater waist circumference, and greater subcutaneous skinfold thickness after controlling for age, physical activity, energy intake, sugar intake, and other confounders. Hot tea consumption was associated with beneficial biomarkers of cardiovascular disease risk and inflammation (increased high density lipoprotein-associated cholesterol and decreased C-reactive protein in both sexes, and reduced triglycerides in women), whereas the association with iced tea consumption was again reversed. Conclusions These cross-sectional results support growing laboratory data which demonstrate the negative association of hot tea intake with markers of MetS.

Heart Disease and Stroke Statistics—2017 Update: A Report From the American Heart Association

“…The following factors have been reported as being inversely associated with incident metabolic syndrome, defined by 1 of the major definitions, in prospective or retrospective cohort studies: muscular strength, 179 increased PA or physical fitness, 134,180 aerobic training, 181 moderate alcohol intake, 86,100 fiber intake, 182 fruits and vegetables, 183 white fish intake, 184 Mediterranean diet, 185 dairy consumption 140 (particularly yogurt and low-fat dairy products 186 ), consumption of fermented milk with Lactobacillus plantarum , 187 animal or fat protein, 188 hot tea consumption (but not sugar-sweetened iced tea), 189 coffee consumption, 190 vitamin D intake, 191,192 intake of tree nuts, 193 avocado intake, 194 long-chain omega-3 polyunsaturated fatty acid, 195 potassium intake, 196 ability to interpret nutrition labels, 131 insulin sensitivity, 157 ratio of aspartate aminotransferase to ala-nine transaminase, 163 total testosterone, 153,157,197 serum 25-hydroxyvitamin D, 198 sex hormone–binding globulin, 153,157,197 and Δ5-desaturase activity. 199 In cross-sectional studies, increased standing, 200 a vegetarian diet, 201 subclinical hypothyroidism in males, 202 and marijuana use 203 were inversely associated with metabolic syndrome.…”

Dietary Variety Is Inversely Associated with Body Adiposity among US Adults Using a Novel Food Diversity Index

“…Women who were pregnant or lactating (n = 587) were excluded because of altered adiposity markers. Furthermore, adults with only 1 d of dietary recall (n = 722) or with unreliable energy intakes (<400 kcal/d or >7000 kcal/d) (n = 115) were excluded, consistent with existing NHANES studies (29,30). The final analytic sample included 7470 adults.…”

Tooth loss and its association with dietary intake and diet quality in American adults

“…30,[50][51][52] For race/ethnicity, participants were recoded to one of the four groups: hispanic, non-hispanic white, non-hispanic black, and other. 53 For ratio of family income to poverty, it was recoded to a three-level categorical variable.…”