Because Consumer Reports Said So

Citing a newly-published study examining barefoot running versus running in shoes, the venerable Consumer Reports opines:

Compared with going barefoot, the sneakers added to the twisting forces on people’s joints by up to 54 percent. The biggest differences were seen at the hip and knee joints. The researchers don’t talk about why running shoes put more stress on the joints, but it’s possible that people adapted their running style when going barefoot, taking more care to lessen the impact because of the lack of cushioning.