It depends on the soup I would think.
yes, no, yes
Everything makes you fat. Adding chilli doesn't help.
Canned soup is loaded with salt. Onions are a vegetable. Vegetables don't make you fat. Animal fat from meat, eggs and dairy is what makes you fat, causes heart disease, some cancers, diabetes and for men, erectile dysfunction.
Not soup made from an old shoe tongue.
Add an onion to it, it will not hurt it any :)
Food makes you fat.
It's true I read it on the Internet.