hmmm....as far as products that contain trans-fats? I have learned that most low carb products that are main stream brands and/or found in grocery stores do have hydrogenated oils in them.
It really is best to head out to your local low carb store, or health food store to buy your products. But even then make sure you double check the labels.
There are so many low carb foods that do have the trans-fats, its almost easier to tell you which do not! lol. At my shop, I do not carry anything with trans-fats, corn syrup, or nutrasweet. If anyone needs product suggestions, let me know. Then you can look for those items in your own towns, or pester your local stores to order them in.
Brands to stay away from...off the top of my head:
Russel Stovers
Whitmans
Werthers
Mission Tortillas
Bella Vita Meat Sauce
Dreyers
Breyers
Big Train
Twizzlers
any peanut butter without the oil on top
Krusteaz
Special K
Carb Options
Sugar Free Nestle Hot Chocolate
Let me know if you want me to list more? Or if you want a suggestion for a product without these nasty ingredients!