detatchment to food

ever since i went to the doctor and she said that i have high cholesterol and elevated liver enzymes, it scared me straight to start losing weight. Ever since then I've had a discomfort of thinking about eating, some times the thought of it makes me a little sick. food still tastes good but i don't have that same connection i had to food before and find it hard to keep up with the recommended calorie intake. take yesterday for example, i was starving and my gf was off work so we went out to dinner, we went to a few places and nothing on any of the menu's sounded remotely appetizing even though it was foods i loved. It wasn't an isolated incident either, it's happened quite a few times.