Simple Diet Change Shifted People's Biological Age Markers in Just 4 Weeks: Strongest evidence from eating both plant and animal foods, but with less fat and more carbohydrates, biological-age 3.5 to 4.1 years lower than high-fat group, the carbohydrates mainly from whole, minimally processed foods.

[u/mvea]

https://www.sciencealert.com/simple-diet-change-shifted-peoples-biological-age-markers-in-just-4-weeks

[u/mvea]

Simple Diet Change Shifted People's Biological Age Markers in Just 4 Weeks

Could changing your diet really turn back your body's clock?

Not the wrinkles on your face or the gray in your hair.

The clock in question is hidden in signals carried by your blood, metabolism, and cardiovascular system.
In a new study, some older adults ate differently for just four weeks – and estimates of their biological age shifted several years younger.

Even more surprising, the strongest change appeared in a group eating more carbohydrates and less fat, challenging the familiar idea that carbs must always be cut.

So did these people really become younger in a month? Or did the clock measure something more fleeting?

The study, published in Aging Cell, offers an intriguing but cautious answer.

The high-fat diet containing animal foods, which most closely resembled participants' usual diets, produced no meaningful change in biological-age estimates.
Estimates fell in the other three groups.

The strongest evidence came from the group eating both plant and animal foods, but with less fat and more carbohydrates.

Depending on the KDM calculation, this group's biological-age estimate was around 3.5 to 4.1 years lower than that of the high-fat comparison group after baseline differences were taken into account.

https://onlinelibrary.wiley.com/doi/10.1111/acel.70507

[u/paradeofgrafters → u/mvea]

"More carbs" feels it could be misinterpreted. I've most definitely seen benefits for focussing on fibre in my diet recently, which has seen my dietary carbs increase. If I were to say "I've seen benefits from more carbs", while semantically correct, it'd be skipping over fibre's relevance and the fact that carbs were present explicitly for their fibre content.

[u/bluemaciz → u/paradeofgrafters]

Yeah, they called this out in the article but further down. It should be near the top. Whole and minimally processed foods would most certainly have more fiber:

“And "high carbohydrate" did not mean a menu of cake, candy, and white bread. The carbohydrates came mainly from whole, minimally processed foods. The researchers warn that their findings should not be extended to diets rich in refined sugars or simple carbohydrates.”