Science Can Help Us Live Longer, But How Long Is Too Long?

From Smithsonian:

Old-men-and-bike-largeNot many people want to live to be 120. That’s one of the findings of a Pew Research Center report that came out last week. In fact, almost 70 percent of those surveyed said an ideal lifespan would be somewhere between 79 and 100 years.

…Which brings me to one more question: How realistic is the notion that science can one day make 100 the new 60? For starters, we’re not only living longer–life expectancy in the U.S. is now close to 79–but the period of truly dismal health before death is getting shorter. That’s one of the main findings of a Harvard University study published last month–that most people no longer are very sick for six or seven years before they die. Instead, that stretch of poor health has shrunken to about a year or so. Thanks to medical science, we are becoming more like light bulbs–we work well, then go out fast. “People are living to older ages,” said lead researcher David Cutler, “and we are adding healthy years, not debilitated ones.”

…Here’s other recent research on the battle against aging:

  • Now find out something good about marshmallows: Hot cocoa doesn’t just hit the spot on a winter morning; It also may be keeping your brain sharp. A new study from Harvard University says that two cups of cocoa a day was enough to increase the blood flow in the brains of older people. It also apparently helped their memories work faster.
  • Didn’t see that coming: Living through a traumatic experience may actually help men live longer. Research just published in PLOS One says that male survivors of the Holocaust tend to live longer than men who didn’t experience it. That may seem counter-intuitive, but the researchers say it could reflect a phenomenon known as “post-traumatic growth,” where high levels of psychological stress serve as stimuli for developing personal skills and strength and a deeper meaning to life. The same longevity effect was not seen in women Holocaust survivors.
  • In with the bad air: A study by M.I.T. professor Michael Greenstone has quantified the impact of the heavy air pollution from coal-burning power plants in China. By comparing statistics from a more urbanized region where power was supplied mainly by coal plants with a more rural one without any power plants, Greenstone concluded that regular exposure to coal pollution can take more than five years off a person’s life.
  • Now will you get your beauty sleep?: If you don’t get enough sleep, you aren’t doing your skin any favors. That’s the conclusion of a study that found that the skin of poor sleepers ages quickly and also takes longer to recover from sunburn and dirty air.
  • This explains many things: And finally, researchers in Japan found that aging animals like sweets less and are more willing to put up with bitter tastes.

More here.