A new study has found that the ursolic acid found in apple peels and tomatidine in green tomatoes reduces the activity of a protein called ATF4 which triggers muscle atrophy and weakness due to aging.

Muscles tend to atrophy and weaken with age, but researchers may have found accessible ways to mitigate these effects. 

According to their recent study, ursolic acid, which is found in apple peels, and tomatidine, a compound in green tomatoes, have been shown to inhibit a key aging-related activator in the body. 

This protein is called ATF4 which is thought to