I hesitated to respond to this, because nobody likes a know-it -all or someone who trying to take away something they really like.
But ice cream must be at least 10% fat in order to be called "ice cream".
"Ice cream contains not less than 1.6 pounds of total solids to the gallon, and weighs not less than 4.5 pounds to the gallon. Ice cream contains not less than 10 percent milkfat"
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http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?fr=135.110
Also,
"Most major ice cream companies do not produce "sugar free" ice cream products. Rather, you can find numerous flavors with "no sugar added" labels, which use artificial sweeteners instead of added sugars."
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http://www.livestrong.com/article/431170-sugar-free-ice-cream-nutritional-facts/
So:
Carbohydrates and Sugar
A 1/2-cup serving of no-sugar-added vanilla ice cream contains about 15g of carbohydrates, according to the USDA Nutrient Database. Breyers CarbSmart Vanilla ice cream contains 13g of carbohydrates. Both versions contain about 4g of sugar. Breyers CarbSmart Vanilla ice cream lists containing 5g of sugar alcohols, mostly in the form of sorbitol. Sugar alcohols are modified carbohydrates that contain much fewer calories than sugar. They are not as sweet as sugar, but food companies can use them to sweeten products while advertising that the food is low in calories or low in sugar. The body has trouble absorbing sugar alcohols, and such foods are typically high in saturated fat.
Fat and Cholesterol
A serving of no-sugar-added vanilla ice cream contains about 5g of fat, while Breyers CarbSmart Vanilla ice cream contains 6g. About half of the fat in both products exists in the form of saturated fat. Saturated fat can have and adverse effect on blood cholesterol levels and contribute to cardiovascular disease, and the American Heart Association advises consuming less than 7 percent of your calories from this fat each day. No-sugar-added vanilla ice cream contains between 15 and 18 mg of cholesterol. The USDA advises consuming less than 300 mg of cholesterol each day to avoid similar adverse cardiovascular effects.
Calories
A 1/2-cup serving of no-sugar-added vanilla ice cream, weighing 68g, contains 115 calories. Similarly, 1/2 cup of Breyers CarbSmart Vanilla ice cream contains 90 calories. Most adults require about 2,000 calories a day to support their energy needs, so a serving of a typical brand of no-sugar-added ice cream contributes about 5 to 6 percent of the typical adult's daily caloric requirement."
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http://www.livestrong.com/article/431170-sugar-free-ice-cream-nutritional-facts/
But I don't know that many who only eat a 1/2 cup (or 4 ounces) of ice cream.
If you are eating a cup of no-sugar-added vanilla ice cream, that's 230 calories - or over 10% of what you need in a day.
You may already know all the above, but I think it is devious how companies get those who are trying to lose weight think they are doing great by buying a "no-sugar-added" product.
Aren't the strawberries enough of a treat?
[And I apologize if you think I am crossing the line between being helpful and being a jerk.]