Carbs and especially processed foods can cause inflammation. I had something similar and it disappeared after a couple of weeks. Amazing that it would work so quickly for me and after years of treatment.
You will not be hungry. Protein and fat will control the hunger nicely. Plus, it has to be tasty. That is the idea.
The blood sugar swings cause by sugar and carbs will make a person very hungry on the down side blood sugar crash. Plus, the body becomes insulin resistant.
The important thing is to hang in there. There will be times when you will have cravings. My wife made “fat bombs” which are coconut oil and peanut butter and unsweetened cocoa. Peanut butter is higher in carbs but the amount in the fat bomb is small. It will reduce the cravings within five minutes.
Also, start adding veggies. Veggies of all types to replace the breads and pastas.
I should add that, pre card diet, just about every season, I was sick with the flu or a cold. If it was going around the office, I'd get it and be out sick for a couple of days. I have not been sick in the two years since I have been on the diet. Anecdotal but it appears that my immune system is MUCH BETTER.
Lastly, my triglycerides, although nominal before, are now very low now.
I am amazed my joints already do not hurt like normal. I was getting to the point of pain being so bad sometimes I would have trouble walking to the bathroom. Today my joints are not hurting at all. But my muscles are sore. I've read that may be from switching from carb fuel to fat fuel and the muscles have not yet adapted to the change. Glad to hear your health improved with this life change/ It gives me hope I have finally found the key to being a whole person again and not some cavedewlling hermit shunning the outside world because moving much, hurts.