Word: calcium
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...subjecting them to the pebble-like texture of Grape Nuts, consider the new instant organic oatmeal produced by Country Choice, called Fit Kids. It doesn't have high fructose corn syrup or a lot of the artificial ingredients that fill other kids' cereals, and it has plenty of fiber, calcium and iron. Another quick and healthy option for breakfast: a simple five-ingredient smoothie, made with bananas, milk, peanut butter, honey and ice. It's both cheaper and healthier than most breakfasts...
...drink three cups or more of coffee a day? Genetic tests can now determine whether you--like approximately 10% to 20% of the population--have a specific genetic variation that makes it harder for your body to absorb calcium in the presence of caffeine, thus increasing your rate of bone loss...
...that are providing limited genetic testing for about $250. "We have 19 genes we've identified that have a clear and defined response to diet and environmental or lifestyle choices," says Rosalynn Gill-Garrison, a molecular biologist who helped found the Sciona company in 2000. Worried about that caffeine-calcium link? Sciona tests for that, as well as genetic variants that affect insulin sensitivity, cholesterol levels and more...
...ones. The gene itself directs construction of receptors (docking sites within the cell) for a form of vitamin D that plays a crucial role in bone formation. Once vitamin D locks in, the receptors act as a sort of control tower, switching on and off other genes that regulate calcium absorption and the constant renewal of bone...
...fact, bone density is determined about 75% by heredity and 25% by environmental factors. As a hedge against later bone erosion, children identified as vulnerable to osteoporosis will be urged to build up their bone density by increasing their calcium intake and exercising with weights. Those at high risk will also be strongly advised to shun cigarettes and alcohol, which speed up bone loss, and perhaps take vitamin D supplements and estrogen- replacement pills after menopause. Eventually, researchers hope to develop new drugs that stimulate bone formation. "The whole business of genetic testing is clouded by things...