Ear protection. Most hearing loss can be prevented by hearing ear plugs when exposed to loud noises or keeping the volume down while listening to music while wearing headphones. If you cannot carry on a conversation while listening to your earphones, the noise is too loud. Your ears will thank you later.
Prevention. Age related hearing loss is like age related vision loss. Called presbyacusis- cannot be prevented. But you can take certain precautions. Avoid loud repetitive sounds.