How old is your dog, in dog years? The widely used rule of thumb – human years x 7 – is apparently incorrect. The science behind the new formula tells us something about extrapolation and a lot about how both we, and our canine friends, age. And the Hanks-dog graph is kinda cool, too.
This article is the second in a three-part series that is adapted from an essay written by Dr. Alex Berezow, now archived at Suzzallo Library's Special Collections at the University of Washington. In Part II, he discusses how aging and cancer are two sides of the same biological coin.
Aging, whether you consider it a “natural” biologic process or a disease, is increasingly the subject of scientific investigation that goes beyond epidemiologic studies. Or how diseases impact longevity. Some of the most exciting work comes from studying our metabolism and mapping those changes to specific diseases.
Using an AI algorithm researchers can use electrocardiograms to tell us our gender and age. Have they found a Magic 8-ball of health?
Crickets have just one short season to reproduce. Can they shed light on a theory of aging, which holds: We use so much energy to reproduce, that we have little left over to stop our decline?
If aging is a disease, then what are the signs? And more importantly how do we treat the problem? Surely it must be more than exercise and moderation, right?. The simple process of defining a disease is not as simple as it may seem.
The recent self-death by 104-year old scientist David Goodall brings to the fore a key question: Whether to deem deterioration from advanced aging – beyond having an incurable disease – as another reasonable consideration for euthanasia.
Naked mole rats, which are neither moles nor rats, have unusually long lifespans compared to other rodents, and also seem to not develop cancer. Researchers are diligently searching for the key(s) to their success, and recent work sheds some light on how these critters manage to avoid both.
One type of malady that most people really hope to avoid is Alzheimer's Disease. As the population ages, this disorder and similar ills will likely become more common. While much research has been devoted to figuring out how to forestall these problems, recent studies indicate we still have a long way to go to get there.
The recent wildfires in northern California caused dozens of deaths, with most being those over age 65. Diminution of mobility and hearing acuity, for example, make older folks more vulnerable during natural disasters such as fast-moving fires, floods and earthquakes.
New research published in the journal Nature Biomedical Engineering shows that molecular and physical changes in skin cells can be used to calculate a "cellular age" that may be used as a proxy for healthspan.
Death rates for Alzheimer's Disease have risen 55% between 1999 and 2014. That's according to the Centers for Disease Control and Prevention’s latest Morbidity and Mortality Weekly Report. Here are the reasons why this is occurring, and the trend's implications.