Vocal changes in birds may predict age-related disorders like Alzheimer's disease in people, according to a new study.

The protein PNA5 could possibly prevent cognitive decline in people who have Parkinson's disease and related disorders, researchers report.

"The idea that Parkinson's disease can start in the gut is a bit weird.... But our research is charting a map for how this is possible."

Researchers say it's possible for nanoparticles to go through the digestive system and deliver medicine directly to the brain tissue.

A new theory "reinforces the idea that Parkinson’s... may be fueled by toxicants and is therefore largely preventable."

Researchers have discovered a network of neurons in mice that help them make left or right turns.

In a new paper, researchers argue for classifying Parkinson's disease based not on clinical diagnosis but biology.

"The emergence of micro and nanoplastics in the environment might represent a new toxin challenge with respect to Parkinson's disease risk and progression."

A new AI tool that can assess the severity of Parkinson’s disease relies on 10 taps of the finger. It produces results in minutes.

A new blood test that detects Parkinson’s disease may offer a way to diagnose the condition before nervous system damage gets worse.