A positive association between intake of animal protein and bone mineral density (BMD) among women aged 55 years and older was found in a study published in the April 2002 issue of the American Journal of Epidemiology. The study, which involved 572 women, showed that each 15-g/day increase in animal protein intake was linked to an increase in BMD of 0.016 g/cm2 at the hip, 0.012 g/cm2 at the femoral neck, 0.015 g/cm2 at the spine, and 0.010 g/cm2 in a total body measurement. In contrast, vegetable protein was negatively associated with BMD.
One study linked multiple pregnancies to an increased risk of developing atrial fibrillation later in life, and another investigated the association between premature delivery and cardiovascular disease.
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