This week’s Health newsletter discovers time outside helps your eyesight; finds foods that fight inflammation; examines the link between food dyes and ADHD ... and reports on when old age begins.

PHOTOGRAPH BY TIM LAMAN, NAT GEO IMAGE COLLECTION  

You don’t have to be a kid to make time to play outdoors. New studies are showing that time in the sun is helpful to the vision of kids and adults. How exactly?

Related: Why are so many kids being diagnosed with myopia? 

Also: How parenting style can affect a kid  

PHOTOGRAPH BY MASKT, GETTY IMAGES 

Black beans, raspberries, an apple: These are key parts in the daily diet of one family trying to keep inflammation at bay. Research is revealing exactly how what you eat can affect the gut microbiome—and ultimately ward off chronic disease.

Related: Why nothing compares to the Mediterranean diet 

Also: Are seed oils actually bad for you? Experts say we're missing the big picture  

PHOTOGRAPH BY DANIEL ALBONE, ALAMY STOCK PHOTO X

PHOTOGRAPH BY NORIKO HAYASHI, NAT GEO IMAGE COLLECTIONN 

Science says it’s longer than you think? Latest research shows there’s no identifiable, universal border between middle age and old age—and it is, to some degree, flexible.

Related: What about aging ‘bursts’ at ages 44 and 60?

Also: There are now more people over 65 than under 5—what that means

Today’s Soundtrack: Sunshine Baby, The Japanese House 

Bonus Track: In the Sun, She & Him 

Today’s newsletter was edited and curated by David Beard and produced by Amanda Bryant-Williams. Thanks for reading! Have a suggestion? Let us know.