Is there a way to improve your hearing?

You always hear of carrots for your eyes, vitamins E, A, and C for your skin , exercise for your bones and heart, water for your kidneys, brushing your teeth and tongue for a healthy mouth and so on. But I’ve never heard of anything in particular for helping to improve your hearing. Is it a one shot deal or is there ways to help keep hearing loss from getting worse, other than not listening to loud sounds.