WHO, 3 billion people suffer from neurological diseases. Diabetic neuropathy has grown the fastest: in 30 years the number of people affected by it has more than tripled, exceeding 200 million.

There are also new entries on the list, such as the neurological complications of Covid-19, which affected 23 million people in 2021. Controlling blood pressure and pollution levels could prevent up to 84% of years of healthy life lost by stroke. Intervening on smoking could then reduce the risk of stroke, dementia and multiple sclerosis.