Speaking, singing, and making other sounds require many parts of your body to work together. Your brain thinks of ideas. Your lungs move air in and out. Your vocal cords vibrate. Your mouth and nose help shape sound.
“Our whole body participates in the production of voice, speech, and breathing. So we can get a lot of information about our health from them,” says Dr. Yael Bensoussan, a voice researcher at the University of South Florida.
Many conditions can impact the various body parts involved in sound production. These include depression, Parkinson’s disease, dementia, lung problems, and even cancer. Measuring voice, speech, and breathing patterns could help diagnose health problems.
Researchers are testing ways to use apps and other tools to let people measure such information at home. For example, a recent study showed that a computer program could identify patients with Parkinson’s disease by their breathing patterns during sleep.
“Voice, speech, and breathing are easy to access, inexpensive, and non-invasive to measure,” Bensoussan says. “For example, for a test for lung function, you currently have to go to a hospital and blow into a machine. Then you need someone to analyze that test. Just recording your voice or breathing sounds on your phone would be a lot cheaper and easier.”
Speech pattern analysis has shown promise for diagnosing impairments in memory or thinking abilities, and mental health conditions like depression. The way people speak, the tone of voice, and even the words used can all change when someone develops depression, explains Dr. Gari Clifford, a biomedical engineer at Emory University and Georgia Institute of Technology.
Clifford’s team is trying to use speech patterns and facial expression changes to catch depression early in people with dementia. They are now testing their technology in certain tablet and smartphone apps to track changes in people’s daily health.
This could help doctors see the effects of depression treatments in real time and change them quickly if needed. It could also provide early warning that someone’s health is declining.
Other NIH-funded research teams are testing speech analysis to screen for additional mental health problems, like anxiety. They’re also looking at speech patterns to help diagnose diseases like amyotrophic lateral sclerosis (ALS) early.
Bensoussan’s team is building the world’s largest collection of voice and speech samples related to health information. They’re including people from a wide range of backgrounds and health conditions. They hope this will aid researchers in building new tools for diagnosis.
Voice and speech analysis tools will eventually have to take people’s whole health into account, just like a doctor would, Bensoussan says.
“Multiple different diseases can cause the same voice changes. For example, for a hoarse voice, someone with cancer of the throat and someone with laryngitis can sound exactly the same,” she explains.
You can’t yet talk into your phone and get a full health report. But Bensoussan encourages people to pay attention to changes in their voice and speech. “If you have a voice change for more than two to three weeks, it may indicate an issue with your health,” she says. See the Wise Choices box for signs to look for.
If you care about hearing loss, please read studies about antibiotic drug that can lead to hearing loss, and whether you should get an hearing aid or see a specialist.
If you care about dementia, please read studies about how the Mediterranean diet could protect your brain health, and these antioxidants could help reduce dementia risk.
