Recent research suggests the rising cacophony could temporarily or permanently impair the hearing of some marine mammals, hurting their ability to communicate or navigate.

William ends up in the hospital with four cracked ribs, a broken arm and a damaged larynx that may permanently impair his ability to speak.

Do not take laxatives for constipation; they can permanently impair gut motility.

The effects are cumulative-very soon it begins to permanently impair your ability to Thrip at all.

At the age of three Waxman suffered a serious eye injury involving boiling water tipped from a stove, which permanently impaired his vision.

We do not yet know to what extent medication administered during the developmental process permanently impairs the potential to regulate mood.

In 1984, Colin suffered a stroke, which permanently impaired his writing abilities.

The lead in the air from car exhaust maims children intellectually, permanently impairing their brain development.

Such delays can permanently impair a child's ability to learn to speak intelligibly and can result in long-lasting social, emotional and academic difficulties.

But prolonged exposure can permanently impair or prematurely age anybody's lungs," he added.