“Debbie Downer” here. Can those speeds and steep drops cause brain and spinal injuries?
As somebody who experiences back pain on and off, I'd say the steel ones are much smoother and better on the back then the smaller wooden style ones.
Cedar Point has one called the "Mean Streak" that is very painful on the back. Going around a turn I felt like I had to hold my spine in. After getting off I told my kid she'd be going on it herself from now on. Personally, I now prefer to go round and round on the train with an occasional break at the saloon.
Here is a complete list of roller coasters at Cedar Point if anybody is interested.