Dr Singh said ferritin was found in a similar form in different species.

BBC: Prions damage brain tissue

People who suffered progressive damage had significantly higher levels of ferritin.

CNN: Health: Making Heartfelt Gestures

High levels of ferritin (an indicator of the amount of iron in the body) help explain why men tend to develop heart disease earlier than women, Sullivan says.

CNN: Health: Making Heartfelt Gestures