Currently browsing posts about: Calories

Today’s question (see Vending Machines post): “I was looking at the Nutrition Facts Label on a bag of carrots today…If I read this label and compare it to packaged foods, the carrots really don’t look all that healthy. And yet I know they are. I have the same experience with apples and with other fruits and vegetables. What needs to be added and changed on the Nutrition Facts panel so that this makes more sense? Has anyone done a blind study of nutrition labels, having people compare them side-by-side and see which food they believe is more healthy without knowing what the food is, but from the label alone?”

Response: When Congress passed the nutrition labeling act of 1990, which mandated Nutrition Facts labels on packaged foods, the FDA created a bunch of possible designs and tested them on consumers. The result: nobody understood any of the designs. The FDA chose the one that consumers least misunderstood. In What to Eat, I devote two chapters to explaining food labels, one for Nutrition Facts, and one for Ingredients. The FDA has a lengthy site to teach the public to understand food labels. I think the ingredient list tells you more about the real nutritional value of foods than the Facts part. My rule, only somewhat facetious, is to never buy foods that have more than 5 ingredients. The more processed a food is, the more ingredients it is likely to have (to cover up the losses), and the lower its nutritional quality. Fresh and some frozen foods have only one ingredient: carrots, apples, broccoli, beans. The most important thing I’d change on food labels is the calories. The FDA proposed five years ago to require packages likely to be consumed by one person to display the total number of calories on the front panel, rather than listing calories per serving, which makes the calories appear lower than they are. What happened to that excellent proposal? It disappeared without a trace (the packaged food industry loathes the idea). It’s tricky to figure out what else an ideal food label would display. Any ideas? Forward them to the FDA (and post them here, of course).

Today’s question is one I often get about my 15 seconds of fame in Morgan Spurlock’s film, SuperSize Me! (you can view the clip on my food politics website). A student in Great Britain writes: “…I would like to comment on your description of a calorie….You described it as “the amount of energy required to heat 1 litre of water by 1 degree Celsius.” Whereas I would argue that a calorie is the quantity of thermal energy required to raise 1g / 1cm3 by 1 degree Celsius, from an initial temperature of 15 degrees Celsius or 252 Kelvin. May I suggest that what you meant was a kilocalorie, and although this may seem pedantic, this is a gross difference and an inaccurate education for those watching. Especially after the number of people that were demonstrated to have no real understanding of the calorie…this was disappointing.”

My comment: Oh dear. It’s great that students are learning their basic chemistry but what I defined in SuperSize Me! was a Calorie (spelled with a capital C)–the kind used on food labels. This, of course, is really a kilocalorie. The calorie/Calorie/kilocalorie confusion is why I devote an entire chapter of What to Eat to explaining what calories are and why they matter.

A reader writes: ”
I am a fan of your work, and am writing to ask your opinion of an idea.

Can you think of an appropriate lobbying group to consider demanding that all TV food advertisements carry a listing of calories, fat, and sugar content? I was watching a TV show that had several ads for restaurant meals, hefty desserts, etc and realized how seductive such ads can be. Perhaps, if we viewers saw that a certain ice-cream creation had over 1,000 calories and 40 grams of fat, we might not hop in the car for a fix.

If alcohol ads have ‘Drink Responsibly” all over them on TV, and cigarettes only show up in print ads but still with the Cancer warnings, could not food ads have a simple listing of the three common obesity triggers?”

Opinions, please. Would something like this be useful?