The human feet can shrink in size. This decrease is most often seen among individuals experiencing dramatic weight loss, according to Mayo Clinic nutritionist Katherine Zeratsky.
Fat is stored energy and burned off as the body needs it; most commonly during exercise. Since fat is stored throughout the entire body, significant weight loss brings about the same reduction in the feet as those noticeable in the arms, legs, face and neck.
As the feet become smaller in size, foot strength may also decrease. Those that do undergo a shrinkage in foot size are encouraged to incorporate foot exercises to boost the overall health of the feet, cite Healthy Living experts at azcentral.com.