Eating out on your macros

What a chain has to tell you

Under the FDA’s menu-labeling rule, restaurants and similar food establishments that are part of a chain with 20 or more locations, operating under the same name and selling substantially the same menu, must list calories for standard menu items on menus and menu boards. The rest of the nutrition information is available on request in writing: total, saturated and trans fat, cholesterol, sodium, carbohydrate, sugars, fiber and protein. Compliance has been required since May 7, 2018 (FDA, menu labeling).

So at a covered chain, you can ask for the nutrition information and get protein, carbs and fat for the standard items. For a local restaurant with one or a few locations, the rule does not apply, and you are estimating.

How accurate are the numbers?

Researchers have tested this by sending restaurant food to a laboratory. In a 2011 study in JAMA, Urban and colleagues measured 269 food items from 42 restaurants by bomb calorimetry. On average, the stated and measured calories were not significantly different, a gap of 10 calories per portion. But individual foods varied, and 50 of the 269 items (19 percent) contained at least 100 more calories per portion than stated (Urban et al., 2011).

An earlier study of foods marketed as reduced-calorie found a less comfortable result. Measured values of 29 restaurant items averaged 18 percent above stated values, with some individual items at up to 200 percent of the stated number, and free side dishes raised the energy provided to an average of 245 percent of the stated amount for the entrees they came with (Urban et al., 2010). The authors cautioned that the differences did not reach statistical significance because of the variability, so treat these as signals about spread, not as a fixed correction factor.

The takeaway is not “restaurants lie.” A printed number is an average for a dish that is hand-assembled, and the dish in front of you can sit on either side of it. Add the sides, sauces and bread that never made it onto the count, and the gap is wider.

A way to order

Anchor on protein

Pick the protein dish first, then fill in around it. If you track a protein target, the easiest win is choosing the entrée that carries it, because starches and vegetables are easy to scale up or down at the table and a protein shortfall is not.

Estimate with a range

When you are estimating, use a range rather than a point. A working heuristic, ours and not a published figure, is to take your best guess and add 10 to 20 percent for dishes with sauces, dressings or oil. If you guess 700 calories, plan as if the meal is 770 to 840. Measured studies show the error can be much larger on single items, so do not read false precision into the total. Then let the rest of the day absorb the uncertainty, because one meal is a small share of a week.

Keep it in proportion

Eating out is part of a normal life. A good approach is the same one used with packaged food: get the best information available, account for what you changed, and do not count the meal twice because it was approximate. If tracking restaurant meals feels stressful, that is a reason to loosen the method, not to tighten it. If you have a history of disordered eating, talk with a professional before using any tracking method.

How we use this

MacroCrafted is built around meals you assemble from weighed ingredients, which are only as exact as the inputs. A restaurant meal is an estimate wherever you log it. Planning the other meals precisely leaves a known amount of room for it.