| | Extra Calcium Not Always Extra Beneficial for Bones
It's important to get enough calcium for your bones, but a new Swedish study suggests more than that may not do much extra good. The study found that women with the lowest initial dietary intake of calcium were 18% more likely to suffer a fracture over the next 19 years. But there was little difference in fracture risk between women in the middle levels of calcium intake and those getting the most.
"These findings re-enforce the advice to make sure to get adequate calcium from food, but don't overdo it with supplements," says Bess Dawson-Hughes, MD, director of Tufts' HNRCA Bone Metabolism Laboratory. "Then make sure you're getting enough vitamin D, so your body can utilize that calcium."
The latest guidelines from the Institute of Medicine, updated last November, advise women over 50 and men over 70 to get 1,200 milligrams of calcium daily. Younger adults should aim for 1,000 milligrams daily. The updated vitamin D recommendations call for 600 IU of vitamin D daily through age 70, while older adults need 800 IU. Some expert groups have called for higher vitamin D intakes for those at risk of deficiency.
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Seven Keys Against Heart Disease
People who met more of seven recommended cardiovascular health factors were less likely to die of all causes and especially of heart disease, according to a new study presented at a specialty meeting of the American Heart Association and published in JAMA. Quanhe Yang, PhD, of the Centers for Disease Control and Prevention, and colleagues analyzed data on 44,959 US adults from national health and nutrition surveys. Those who met at least six of the heart-health lifestyle factors were 51% less likely to die of all causes over an average 14.5 years of followup, and 76% less likely to die of cardiovascular causes, compared to those meeting only one or none.
The seven factors are: - not smoking
- being physically active
- having normal blood pressure
- normal blood glucose
- normal total cholesterol levels
- not being overweight or obese (BMI less than 25)
- eating a healthy diet.
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Processed Meats Associated with Pancreatic Cancer Eating processed meats such as bacon, sausage and ham appears to increase your relative risk of pancreatic cancer, as does red meat of all kinds for men. Because pancreatic cancer is relatively uncommon compared to such cancers as those of the colorectum and lung, however, even the 19% added risk associated with eating 50 grams of processed meat daily (1.76 ounces, or about four slices of cooked bacon) is relatively small. While perhaps not a reason to swear off bacon and sausage entirely, the findings might be further cause to resist reaching for that extra helping.
Susanna Larsson, PhD, of the Karolinska Institute in Sweden, and colleagues reviewed 11 prior studies totaling more than 2 million people, of whom 6,643 had pancreatic cancer. The link with processed meat consumption was observed across the board, but only men saw a greater risk of pancreatic cancer with higher red meat consumption. That could be, scientists speculated, because men generally ate more red meat, suggesting an association between risk and the highest levels of red meat intake.
But Joel B. Mason, MD, director of Tufts' HNRCA Vitamins & Carcinogenesis Laboratory, cautions, "The 11 component studies didn't consistently control for what are potentially important confounding variables. For example, most of the studies did not control for the incidence of diabetes, which is felt by many to be a risk factor for pancreatic cancer." Read Full Article |
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