Another study: Even if you only start exercising later in life, exercising and “aging well” are related,

A good article from the NY Times –

being physically active during adulthood is particularly important. In one large-scale study published last fall that looked at more than 12,000 Australian men aged between 65 and 83, those who engaged in about 30 minutes of exercise five or so times per week were much healthier and less likely to be dead 11 years after the start of the study than those who were sedentary, even when the researchers adjusted for smoking habits, education, body mass index and other variables.

But here's the question –

Whether exercise habits need to have been established and maintained throughout adulthood, however, in order to affect aging has been less clear. If someone has slacked off on his or her exercise resolutions during young adulthood and early middle-age, in other words, is it too late to start exercising and still have a meaningful impact on health and longevity in later life?

And the studies say, better to start exercising late then never –

In the eight years between the study’s start and end, the data showed, those respondents who had been and remained physically active aged most successfully, with the lowest incidence of major chronic diseases, memory loss and physical disability. But those people who became active in middle-age after having been sedentary in prior years, about 9 percent of the total, aged almost as successfully. These late-in-life exercisers had about a seven-fold reduction in their risk of becoming ill or infirm after eight years compared with those who became or remained sedentary, even when the researchers took into account smoking, wealth and other factors.

Those results reaffirm both other science and common sense. A noteworthy 2009 study of more than 2,000 middle-aged men, for instance, found that those who started to exercise after the age of 50 were far less likely to die during the next 35 years than those who were and remained sedentary. “The reduction in mortality associated with increased physical activity was similar to that associated with smoking cessation,” the researchers concluded.