Abstract | BACKGROUND: OBJECTIVE: The objective was to examine the effects of self-perceived lactose intolerance as it relates to calcium intake and specific health problems that have been attributed to reduced intakes of calcium and dairy foods in a nationally representative multiethnic sample of adults. DESIGN: This was a cross-sectional study in a national sample of 3452 adults. The relation between self-perceived lactose intolerance, calcium intakes, and physician-diagnosed health conditions was analyzed by using linear regression analyses. RESULTS: Of the total sample, 12.3% of respondents perceived themselves to be lactose intolerant. The age-adjusted prevalence of self-perceived lactose intolerance was 7.8% for non-Hispanic whites, 20.1% for non-Hispanic blacks, and 8.8% for Hispanics. Respondents with self-perceived lactose intolerance had significantly lower (P < 0.05) average daily calcium intakes from dairy foods than did those without self-perceived lactose intolerance. A significantly higher (P < 0.05) percentage of respondents with self-perceived lactose intolerance than of respondents without self-perceived lactose intolerance reported having physician-diagnosed diabetes and hypertension. The odds of self-reported physician-diagnosed diabetes or hypertension decreased by factors of 0.70 and 0.60, respectively, for a 1000-mg increase in calcium intake from dairy foods per day. CONCLUSIONS: Self-perceived lactose-intolerant respondents had a significantly lower calcium intake from dairy foods and reported having a significantly higher rate of physician-diagnosed diabetes and hypertension.
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Authors | Theresa A Nicklas, Haiyan Qu, Sheryl O Hughes, Mengying He, Sara E Wagner, Herman R Foushee, Richard M Shewchuk |
Journal | The American journal of clinical nutrition
(Am J Clin Nutr)
Vol. 94
Issue 1
Pg. 191-8
(Jul 2011)
ISSN: 1938-3207 [Electronic] United States |
PMID | 21525197
(Publication Type: Journal Article, Research Support, U.S. Gov't, Non-P.H.S.)
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Chemical References |
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Topics |
- Adult
- Aged
- Calcium, Dietary
(administration & dosage)
- Cross-Sectional Studies
- Dairy Products
- Diabetes Mellitus
(etiology)
- Female
- Humans
- Hypertension
(etiology)
- Lactose Intolerance
(epidemiology)
- Male
- Middle Aged
- Perception
- Prevalence
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