Still others, including myself, use a form of sign language that combines English with American Sign Language (ASL), known as Pidgin Sign Language (PSE).
There are sign language books for both children and adults.
Women's greater use of facial expression, body language and gestures also helps those with the ability to lip-read, which is a substantial benefit to many with hearing loss.
Some of the communication difficulty might also be due to the use of — or failure to use — hearing aids.
Researchers at the Seoul St Mary’s Hospital in South Korea injected deaf guinea pigs with stem cells derived from donated human placentas.
They found that, after several weeks, hearing tests showed the animals had some hearing function restored.