Basically, yeah, your diet must be really spot on for you to have a perfect balance of burning (i.e. you must be consuming your body weight in protein and around the suitable mark of calories). Not sure what your weight or height is, but if you really want to LOSE weight, then you simply have to burn more calories than you take in. But if your waist is slimming down, what else really matters?
What you eat can have a direct effect on your skin if you're struggling with psoriasis. See what to shop for.