Factors associated with calcium intake in Mexican pregnant adolescents

Scientists from Hospital Civil de Guadalajara Dr. Juan I. Menchaca, (Jalisco, Mexico) studied dietary habits, socioeconomic and demographic factors associated with calcium intake of pregnant teenagers.


In a cross-sectional study included 321 participants aged 13-19 y.o. who attended the obstetric division gynecology- the Hospital Civil of Guadalajara. All participants were healthy. Calcium intake was assessed through a food frequency questionnaire and a 24-hour dietary recall. It also included demographic and socioeconomic data.


61% of adolescents eat < 80% of the recommended daily calcium intake. Employment housework adolescents, consumption of milk, consumption of soft drinks, and low literacy level of mothers were the epidemiological factors associated with inadequate calcium intake parameters studied.


The results suggest that calcium intake is deficient in the majority of pregnant teenagers and there are some risk factors that should be identified and treated.

Long term effects of physical activity and calcium diet on bone mass across the different stages of pubertal development

Childhood and adolescence are critical periods of bone mineral content (BMC) accrual that may have long-term consequences for osteoporosis in adulthood. Calcium intake in the diet and adequate physical activity are of maximum relevance in child developement. However, the relative effects of physical activity and calcium in the diet on BMC accrual during the process of pubertal development in childhood remains unclear.


The purpose of this Nebraska study was to determine the effects of calcium intake in the diet self-Reported Physical Activity and the Los bone accumulations during the Five Stages of pubertal development in a large cohort of Diverse Children and Adolescents North American Support weight. Bone mineral density in the Study of Childhood Longitudinal Study BE A mixed 7393 Observations on 1,743 subjects.


Annually, it was measured for DXA BMC, physical activity and calcium intake questionnaire, and the pubertal development (Tanner stage) Examination. They used mixed-effects regression models to assess the activity paragraph calcium intake and physical effects on BMC accrual at each Tanner stage.


It was found that physical activity self-reports of weight contributed significantly to a mayor devengamiento BMC in both sexes and racial subgroups (black and white). In Los black men there, the magnitude of the effect on activity of total body BMC accumulations vary between Tanner Stages fit after paragraph calcium intake; The Difference Between Kids Mayor of high and low activity was greater Managers Tanner Stage 3 intake of calcium had significant effect on bone accrual in girls only race not black. This effect was not significantly different between Tanner stages.


These results give no support for differential effects of physical activity and calcium intake on bone mass accrual according to the stage of maturation. The longitudinal study showed significant effects of weight that takes physical activity to bone accumulations during all developmental stages of puberty.

Nutrition intervention of calcium-rich foods in community dwellings.

Dr. A. Bernstein and colleagues did a home-based nutrition intervention studied for 6 months in community-dwelling, with functionally impaired elderly. 70 men and women older than age 70 years were randomized. Two groups were set: a nutrition education intervention and a control group that received an exercise intervention. Nutrition education was designed to increase vegetable, fruit, and calcium-rich food consumption.


The scientists used a food frequency questionnaire. Fasting blood measures of nutrients and carotenoids were performed together with a proper statistical analysis. Compared with the exercise group, subjects in the nutrition group increased their self-reported intake of fruits by 1.1 servings per day, vegetables 1.1 servings per day, and milk/dairy 0.9 servings per day.


The doctors in the study suggested that it is possible to improve the dietary intake of community dwelling elders. This dietary improvement includes more fruits, vegetables, and calcium-rich foods. The scientists and doctors at the Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University in Boston also made some interesting recommendations: this increase in consumption of vegetables, fruits, and calcium-rich foods should be specific in order to meet the dietary pattern and lifestyle of each individual.