To grow or shrink something, we would have to change the strength of the electric force, which is not possible to the best of our knowledge. There are a few things in the world that do shrink or grow, but the way they do so is not by shrinking or growing at the atomic level.

Is it possible to shrink?

In fact, we can begin shrinking as early as our 30s, according to some research. Men can gradually lose an inch between the ages of 30 to 70, and women can lose about two inches. After the age of 80, it's possible for both men and women to lose another inch.

Is it possible to shrink an atom?

Technically, atoms don't shrink; the distance between the protons and neutrons in the nucleus and the orbiting electrons are fixed. But you could “substitute heavier, negatively charged elementary particles, such as muons, in place of electrons,” says Michalakis. “Such atoms have much smaller size.”