Obesity Hospital Why Is It There Is So Much Obesity In The Nurses And Technicians In Our Hospitals And Ambulances?

Why is it there is so much obesity in the nurses and technicians in our hospitals and ambulances? - obesity hospital

We have an accident in 06 and Technology ambulances had almost as much harm as the wreck with his obesity.
Should not a weight limit of the candidate?
I've also seen nurses in hospitals, the scales in what appears to 300 pounds!