Ultra-processed foods like breakfast cereals, soft drinks, hot dogs and ketchup appear to increase a person’s risk of developing Parkinson’s disease, a new study says.

A new study did not prove that the foods caused the disease, but experts said it was a step toward understanding how food choices affect brain health.

Each additional 3.5 ounces a day of ultra-processed food consumption was associated with a higher risk of a range of health issues.