Well, the obvious ones, bread, pasta, pizza, any kind of bakery items. We started out eating a fair amount of fruit, but discovered that bananas sent DW's BGL sky high. And oranges. We still eat a fair amount of melons and berries, they seem to be OK in limited amounts. Beans are OK, but again, in limited amounts. Rice, potatoes, even limiting the starchy veggies (corn, lima beans, peas, etc). And ice cream. That was hardest for me, but when I had the chance to eat some week or so ago I was able to say no. Hooray!
Equally importantly, though, IMO, is the increase in fats. We eat plenty of olive oil and coconut oil, butter, and ghee and switched to full fat versions of anything we ate that was low fat, like salad dressings, because going low fat almost always meant going high in HFCS. We never drank sugary sodas, so no change there. Mostly we're trying to follow Dr. Hyman's suggestion of having 70% of our plate be veggies, and using meat more as a condiment than a main course. It's not that hard to do, since we do love vegetables, and it seems that eating plenty of good oils, butter, and cheeses fills us up and keeps us satisfied in a way that just cutting out carbs never did before. And using them to make delicious sauces for the veggies and meats keep it interesting.The most amazing part is not having any real cravings for the stuff we used to practically live on. You've just got to make sure to avoid the oils you've been taught to use in the past, the polyunsaturated oils (soy, safflower, sunflower, any of the clear-ish oils that remain liquid even when cold). And still avoid the trans fats. But saturated fats, previously thought to be evil, tend to be better for you than the processed oils.
Even eating out isn't too hard. We can go to a Mexican restaurant nearby and get Pollo Rojo (Chicken with a spicy red pepper sauce) with grilled zucchini instead of beans and rice. Seafood restaurants are easy, especially here in FL where we can get something like a big salad with a piece of grilled grouper. We did have a difficult time going out with our friends the other day to am Italian place. Everything had either pasta or risotto, and they said no substitutions. So we just didn't eat the risotto. And if we're by ourselves we tell them not to bring bread.
It's definitely a change, but just doesn't seem as much of a sacrifice as it always was in the past when we were counting calories or dropping carbs without replacing the calories with fats. So far, so good. And so far we haven't made any changes to our exercise level (basically nothing), so when we do start walking and exercising more hopefully that will help too. Not so much with weight loss as with improving muscle tone, flexibility, balance, and strength.