A (what I call) "real food vegetarian", anyway. There are "vegetarians" out there who consume crazy amounts of horrible processed foods.

IMO people tend to severely overthink diet. It's pretty hard to be unhealthy when you exclusively eat good, real, whole, food. Diet fads come and go, and are often completely contradictory, but this guideline has always, and will always, be more or less true.

Vegans on the left, Atkins people on the right... drop your food religions and just stop eating crap! It's not that difficult.

If you're trying to lose weight, EAT LESS. You can eat the most extremely healthy diet in the world, if you eat a lot, you will get fat. That's how the body works. Again, it's not exactly rocket science.