Feeling Suddenly Older? Scientists See Aging ‘Waves’ at 44 and 60 - WSJ

The oldest millennials have entered their 40s and are noticing the effects of aging. It might not be in their heads.

A growing body of research says the aging process might resemble rolling hills more than a slow and steady climb. Age-related changes—slowing metabolism, wrinkling skin—pile up over time but may crescendo at specific points in your life.

In a study published in the journal Nature Aging in August, a team of Stanford scientists described “waves” of aging, where major biomolecular shifts happen in the body around ages 44 and 60.

The researchers found people in their mid-40s, for example, had meaningful changes in biological markers and pathways related to their abilities to metabolize alcohol and fats. These types of changes can lead to gradual weight gain or greater sensitivity to that nightly glass of wine.

via www.wsj.com

I feel older now that I've read this.