A study published in 2016 examined the foot measurements of 68 women aged 20 to over 80. It found that the widths of the balls of the feet increased by 3 to 4 millimeters per decade, while ball circumferences increased by about 5 to 7 millimeters, high-step circumferences 0.4 to 4.8 millimeters, and heel instep circumferences up to 2 millimeters.

“That may sound small, but these changes accumulate over several decades and can become enough to affect shoe fit,” Koury says.

If your feet seem to be getting wider or longer and you’re experiencing pain, swelling, numbness, tingling, or difficulty walking or doing other activities, see your doctor…

Read the full article at TIME.COM