Losing Sleep Makes You Lonely and Packs On the Pounds 
The effect a lack of sleep has on the metabolism sets the body up to pack on the pounds, an investigation concludes. The Guardian reports on the findings: https://www.theguardian.com/lifeandstyle/2018/aug/22/poor-sleep-makes-people-pile-on-the-pounds
At the same time, another study found that sleep deprivation led to social withdrawal. The Smithsonian reports: https://www.smithsonianmag.com/smart-news/sleep-deprivation-may-cause-infectious-loneliness-180970013/

Flushed Contacts Produce Plastic Pollution 
Sending worn-out contacts down the drain is a common practice. It is also thought to lead to tens upon tens of thousands of pounds of plastic entering wastewater treatment plants, and the environment. The Smithsonian investigates: https://www.smithsonianmag.com/science-nature/flushing-contact-lenses-down-drain-180970154/

Low-carb Diets Appear to Shorten Life 
A long-term study in the US has found that low-carbohydrate diets were associated with shorter life expectancy than moderate or even high-carb diets. The BBC provides coverage: https://www.bbc.com/news/health-45195474

Blue Light’s Blinding Mechanism Uncovered 
The blue light emanating from our myriad electronic devices has been found to damage the retina, speeding macular degeneration. Now chemists at the University of Toledo have unlocked the actual chemistry of the damage done by blue light. Phys.org has the story: https://phys.org/news/2018-08-chemists-blue.html