The worrying biological changes found in rugby players who suffered several concussions
![The worrying biological changes found in rugby players who suffered several concussions](https://static.independent.co.uk/2024/07/16/10/dc0dc2616aa5f2ba9ab891f17287ea75Y29udGVudHNlYXJjaGFwaSwxNzIxMjA2ODU1-2.1066939.jpg?width=1200&auto=webp)
The study comes after it emerged that former All Blacks player Norm Hewitt died aged 55 with motor neurone disease
The study comes after it emerged that former All Blacks player Norm Hewitt died aged 55 with motor neurone disease