Q: Do feet really get bigger with age?
A: Yes, it’s not your imagination that you may have gone up a shoe size or two over the years. Feet flatten over time due to a loss of elasticity in supporting tendons and ligaments, resulting in a lower arch and an elongation of the sole, along with a spreading of the toes. Pregnancy and weight gain can also increase your shoe size.
By some estimates, feet grow as much as a half size every decade after age 40, which means it’s important to have them measured when you buy shoes and not assume they are the same size as when you were younger. According to a 2011 study in the Journal of Foot & Ankle Surgery, about one-third of people wore shoes that were at least one size off.
Also see How to Buy Shoes That Fit.