Last Week’s Links

Off Your Mental Game? You Could Be Mildly Dehydrated

How severe does dehydration have to be to affect us?

A growing body of evidence finds that being just a little dehydrated is tied to a range of subtle effects — from mood changes to muddled thinking.

Moreover:

As we age, we’re not as good at recognizing thirst. And there’s evidence that older adults are prone to the same dips in mental sharpness as anyone else when mildly dehydrated.

So how much water do we need every day?

A panel of scholars convened several years ago by the National Academies of Sciences, Engineering and Medicine concluded that women should consume, on average, about 91 ounces of total water per day. For men, the suggested level is even higher (125 ounces).

The phrase total water means that water from all sources counts: fruits, vegetables soup, smoothies, and, yes, even your morning cups of coffee or tea.

And remember that by the time you feel thirsty, you’re already beyond the point of mild dehydration. According to the article, an hour of hiking in the heat or a 30-minute run might be enough to cause mild dehydration.

Hands off my data! 15 default privacy settings you should change right now

If you’re concerned about all your personal data that’s being collected, here’s some advice on how to minimize exposure on Facebook, Google, Amazon, Microsoft, and Apple.

Existing drug may prevent Alzheimer’s

Emerging evidence suggests that a “potent” drug could prevent the development of Alzheimer’s disease — but only if a person takes the medication long before symptoms of this condition make an appearance.

Any advance against Alzheimer’s disease is welcome news, even though this one seems to offer a mixed message. The professor who oversaw the study thinks that it may never be possible to cure the disease once patients become symptomatic. However, he hopes identification of patients at risk and treatment before onset might “prevent it from starting in the first place.”

‘Too Little Too Late’: Bankruptcy Booms Among Older Americans

The New York Times reports on findings of a recent study from the Consumer Bankruptcy Project.

Tyrian Purple: The disgusting origins of the colour purple

Even after reading this, purple is still my favorite color.

Purple is a paradox, a contradiction of a colour. Associated since antiquity with regality, luxuriance, and the loftiness of intellectual and spiritual ideals, purple was, for many millennia, chiefly distilled from a dehydrated mucous gland of molluscs that lies just behind the rectum: the bottom of the bottom-feeders. That insalubrious process, undertaken since at least the 16th Century BC (and perhaps first in Phoenicia, a name that means, literally, ‘purple land’), was notoriously malodorous and required an impervious sniffer and a strong stomach. Though purple may have symbolised a higher order, it reeked of a lower ordure.

© 2018 by Mary Daniels Brown

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