Saturday, January 24, 2009

This Week in Science

1. Growing Years Cut Short For Toddlers From Poor Families

Continuous poverty during toddler years can curb the height of children by the time they reach kindergarten, even in industrialized countries, according to new research from the Université de Montréal. Regardless of hereditary factors such as maternal height and education level, according to the finding published in the Journal of Epidemiology Community Health, children from poor families are more likely to be shorter than their peers.

N Z Ehounoux, M-V Zunzunegui, L Séguin, B Nikiema, and L Gauvin. Duration of lack of money for basic needs and growth delay in the Quebec Longitudinal Study of Child Development birth cohort. Journal of Epidemiology & Community Health, 2009; 63 (1): 45 DOI: 10.1136/jech.2007.072157

2. Breastfeeding May Prevent Breast Cancer
 Dr. Michael Lisanti and colleagues at Thomas Jefferson University found that extended lactation protects again mammary tumor development.
Sotgia F, Casimiro MC, Bonuccelli G, Liu M, Menezes DW, Er O, Daumer KM, Mercier I, Witkiewicz AK, Minetti C, Capozza F, Gormley M, Quong AA, Rui H, Frank PG, Milliman JN, Knudsen ES, Zhou J, Wang C, Pestell RG, Lisanti MP. Loss of Caveolin-3 Induces a Lactogenic Microenvironment that is Protective Against Mammary Tumor Formation. Am J Pathol, 2009, 174: 613-629

3. School-based Physical Activity Has Benefits Even If It Doesn't Help Lose Weight

School-based health and exercise programs have positive outcomes despite having little effect on children's weight or the amount of exercise they do outside of school, say Cochrane Researchers who carried out a systematic review of studies on physical activity programs in schools.
Dobbins M, De Corby K, Robeson P, Husson H, Tirilis D. School-based physical activity programs for promoting physical activity and fitness in children and adolescents aged 6-18. Cochrane Database of Systematic Reviews, 2009, Issue 1. Art. No.: CD007651 DOI: 10.1002/14651858.CD007651


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