As a friend of mine, who studies the physics of head injuries, often says things like - The problem with people from the medical profession giving advice on head injuries is that they have a perceived authority in the area of injury prevention. However, they do not have any real understanding of what does & doesn't cause an injury, they're just very good in treat the injuries. This leads to a lot of people thinking nothing more than uninformed opinion as medical fact.
The problem with these "professionals" is that much of what they spout is not "evidence based" which is really unacceptable in this day and age.
Lets take an illness that can be prevented by a simple vaccine
40% of the victims are between 20 and 30 years old
30% percent are between 30 and 40 years old
25% are between 40 and 50 years old
5% are between 50 and 60 years old
So knowing that we have a vaccine we then only discuss the 50 to 60 yer old group, refuse to invstigate or consider the other groups and allow the illness to kill and maim all the other groups.
Ridiculous?
Yet it is exactly what the medical profession does with head injuries!