Hi, how to understand "but otherwise"' in the following sentence? Does it mean "and" "besides"? So in this context, it means "healthy and obese"?đđ
"Researchers assigned 57 obese but otherwise healthy people to one of these two groups or a control group, in which people were simply weighted at the end of each month."
I also notice "obese" in here is a noun, how could it happen, or is it an omitted usage?đđ