Posts Tagged ‘age’

An article published in the British medical journal Lancet says that that the process of aging may be “modifiable.” Meaning that advances in science and medicine are allowing us to slow down the rates of aging. Researchers say that most children born in wealthy nations this century will likely live to become centenarians – not surprising given that life expectancy has been increasing rapidly in countries such as Japan, which has the world’s longest life expectancy, where more than half of the country’s 80 year-old women are expected to live to 90. The greying population will soon transform the face society, and retirement ages will likely be pushed back, said Richard Suzman, an expert on aging at the U.S. National Institute on Aging. “We are within five to 10 years of a watershed event where there will be more people on earth over 65 than there under five,” he said. “Those extra years need to be financed somehow and we need to start thinking about it now.” [via CBS News]

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You think by now scientist would have figured out why our hair goes gray as we age. However, only recently do we know that it’s not necessarily from attainment of wisdom. A team of European scientists just discovered that going gray is caused by a build up of hydrogen peroxide, which our hair follicles normally produce in small amounts. But as we age, wear and tear of our hair follicles renders them unable to properly process the hydrogen peroxide. The peroxide then winds up blocking the normal synthesis of melanin, the substance that gives hair its natural pigment.

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Had a “senior moment” lately? You know, those sudden, momentary lapses when you just can’t seem to remember the most common things. For most of us, we will experience what physicians term normal cognitive aging. Now, Columbia University researchers say that elevated blood glucose levels that occur naturally when we age may contribute to age-related cognitive decline. “This is news even for people without diabetes since blood glucose levels tend to rise as we grow older. Whether through physical exercise, diet or drugs, our research suggests that improving glucose metabolism could help some of us avert the cognitive slide that occurs in many of us as we age,” reported the lead investigator. Although regularly checking your blood sugar level isn’t recommended for non-diabetics, daily exercise is recommended for everyone (especially diabetics) because it contributes to normalization of blood glucose.

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Is it new year resolutions time again? Researchers from Norway report that patients who were scheduled for colonoscopies around the December-January holiday season were one and a half times more likely to keep their appointments. Similarly, patients who were given medical appointments in the weeks immediately subsequent to their birthdays had higher attendance rates. The researchers believe that reminders of aging triggered by annual milestones may be the underlying mechanism for the increased compliance. This certainly sounds logical. Screening programs – and physicians at large – should keep this in mind as a cost-effective way of improving patient compliance.

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Edna Parker of Shelbyville, Indiana, who became the world’s oldest person more than a year ago, has died at the age of 115.  UCLA gerontologist Dr. Stephen Coles keeps a list of the world’s oldest people and said Parker was the 14th oldest supercentenarian in history. Maria de Jesus of Portugal, born Sept. 10, 1893, is now the world’s oldest living person. Research has shown that children of parents that live to be 100 or more also live longer and have less risk of heart attacks, strokes and diabetes. However, good genes won’t necessarily get you past 100 on their own, but it certainly helps. Friends and family say Edna walked a lot and always stayed active, even after moving into a nursing home at age 100 where she, coincidentally, lived with 7-foot-7 Sandy Allen, who is recognized by Guinness as the world’s tallest woman until her death this past August.

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Boston University researchers report that children of centenarians live longer than their counterparts, and with less risk of heart attacks, strokes, and diabetes. In a study published in the November issue of the Journal of the American Geriatrics Society, researchers found that offspring of centenarians had 78% lower risk of myocardial infarction (heart attack), an 83% lower risk of stroke, and an 86% lower risk of developing diabetes.

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A new study from the Norwegian Institute of Public Health reports that low weight and weight loss in middle-aged men could increase the risk of osteoporosis later in life. The researchers hypothesize that weight change can affect the skeleton, as well as the way in which hormones regulate bone metabolism. Although weight increase and elevated weight are beneficial for the skeleton (this is why weight-bearing exercises can strengthen bone and decrease osteoporosis risk), a stable, healthy weight is still recommended as a means for overall good health. Full story.

Sure, we’ve always been told that exercise makes us healthy. That’s pretty hard to dispute. But, does exercise confer a longer lifespan? According to Stanford University researchers it does. In a study published today in the Archives of Internal Medicine, a comparison of middle-aged and older regular runners with healthy counterparts showed that vigorous regular exercise was associated with longer life and less disability in old age. The key word here is vigorous, by which the researchers mean running. What about running causing more injuries in old age? The researchers have also published another study in the August issue of the American Journal of Preventive Medicine where they showed that running was not linked to greater rates of osteoarthritis in elderly runners, and they did not require more total knee replacements than non-runners. Full story.