Is Exercise the Key to Immortality?
Exercise is practically essential to good health but scientists have not understood why until recently. Physical exertion, it seems, helps recycle worn-out proteins that poison the body.
What's the Latest Development?
For the first time, scientists are beginning to understand how exercise works on the body and mind to make us healthier. It seems that physical exertion helps promote autophagy, derived from the Greek for 'self-eating', which is the body's process of recycling worn-out or malformed proteins. In research conducted in Texas, mice which ran on treadmills produced more autophagosomes in their muscles and mice who could not produce autophagosomes became more easily fatigued and processed less sugar from the bloodstream.
What's the Big Idea?
Exercise is about as close as it comes to a panacea, protecting the body and mind against a host of ailments. And if autophagy is the process by which exercise benefits us, then we may have found the first step to prolonging life in dramatic fashion. Autophagy's process of recycling proteins helps slow the aging process by getting rid of "wonky" mitochondria, the power stations of the cell, and would reduce free-radical production resulting from the oxidation of molecules in our bodies.
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What can 3D printing do for medicine? The "sky is the limit," says Northwell Health researcher Dr. Todd Goldstein.
- Medical professionals are currently using 3D printers to create prosthetics and patient-specific organ models that doctors can use to prepare for surgery.
- Eventually, scientists hope to print patient-specific organs that can be transplanted safely into the human body.
- Northwell Health, New York State's largest health care provider, is pioneering 3D printing in medicine in three key ways.
Beyond Beef sizzles and marbleizes just like real beef, Beyond Meat says.
- Shares of Beyond Meat opened at around $200 on Tuesday morning, falling to nearly $170 by the afternoon.
- Wall Street analysts remain wary of the stock, which has been on a massive hot streak since its IPO in May.
- Beyond Meat faces competition from Impossible Foods and, as of this week, Tyson.
Average waiting time for hitchhikers in Ireland: Less than 30 minutes. In southern Spain: More than 90 minutes.
- A popular means of transportation from the 1920s to the 1980s, hitchhiking has since fallen in disrepute.
- However, as this map shows, thumbing a ride still occupies a thriving niche – if at great geographic variance.
- In some countries and areas, you'll be off the street in no time. In other places, it's much harder to thumb your way from A to B.
A recent study used data from the Big Five personality to estimate psychopathy prevalence in the 48 contiguous states and Washington, D.C.
- The study estimated psychopathy prevalence by looking at the prevalence of certain traits in the Big Five model of personality.
- The District of Columbia had the highest prevalence of psychopathy, compared to other areas.
- The authors cautioned that their measurements were indirect, and that psychopathy in general is difficult to define precisely.
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