Oxidative stress is a state that occurs when there is an excess of free radicals in the body’s cells. The body produces free radicals during normal metabolic processes.

Oxidative stress can damage cells, proteins, and DNA, which can contribute to aging. It may also play a role in the development of a range of health conditions, including diabetes, cancer, and neurodegenerative diseases such as Alzheimer’s.

The body naturally produces antioxidants to counteract these free radicals. A person’s diet is also an important source of antioxidants.

Making certain lifestyle and dietary changes may help reduce oxidative stress. These may include maintaining healthy body weight, regularly exercising, and eating a balanced, healthy diet rich in fruits and vegetables.