I’m just getting caught up with the Wall Street Journal’s report on calories in “low-calorie” meals served in chain restaurants. It’s worth a look. The reporter sent meals to a laboratory to test for calories. The good news: most calorie contents were as advertised. The not so good news: the calories are as advertised if–and only if–you don’t eat side dishes or additions like bread, cheese, or salad dressing. If you do, the calories go way up. And calories count. Alas.
It never would have occurred to me that cinnamon had anything to do with type 2 diabetes one way or the other–calories are what matter–but earlier studies suggested that a gram or so a day helped control blood sugar levels. Apparently, enough of such studies were available to take a look at them as a group and do a “meta-analysis.” Alas, this analysis “found no significant benefits of cinnamon supplement on glycated hemoglobin (A1C), fasting blood glucose (FBG), or other lipid parameters,” a conclusion perhaps disappointing, but not surprising. Watch the calories!
A reader, “rj,” sends a link to an article in Men’s Health (“What if bad fat isn’t so bad”), and asks about: “The supposed inconclusive evidence for sat fat being the culprit in atherosclerosis. Personally, I couldn’t find any credentials of the author but nevertheless would be much interested in your thoughts on the matter.”
My thoughts: As I keep saying, nutrition science is complicated and this article, by an excellent science journalist, is the latest in a series by excellent science journalists (see, for example, the recent books by Gary Taubes and Michael Pollan) to point out the inconsistencies in data on saturated fat and heart disease risk. Let me make several quick points: (1) All fats–no exceptions–are mixtures of saturated, unsaturated, and polyunsaturated fatty acids (2) Saturated fats occur in greater proportions in animal fats–meat and dairy foods, (3) Some epidemiologic evidence–but not all–suggests that people who eat a lot of meat and dairy foods have a higher risk of heart disease than people who eat a lot of fruit and vegetables (this is correlation, not causation), (4) The same clinical studies that show how trans fats do bad things to blood cholesterol levels also show that saturated fat does too, although not as much (But: people take in a lot more saturated fat than trans fat), and (5) Saturated fat is a single nutrient and the studies reviewed and discussed by the journalists take saturated fat out of its dietary context.
Out-of-context studies of single nutrients are exceedingly difficult to interpret. At the moment, today’s dietary (not single nutrient) advice is the same as it has been for the last fifty years. As I put it in What to Eat, “Eat less, move more, eat plenty of fruits and vegetables, and don’t eat too much junk food.” Michael Pollan gives exactly the same advice: “Eat food. Not too much. Mostly plants.” Do this, and you really don’t need to give a thought to single nutrients.
Does this help at all? Thanks for asking.
The FDA has produced electronic posters giving the nutrient content of raw fruits, raw vegetables, and cooked seafood (purchased raw). Why? I’m guessing because real foods don’t come with Nutrition Facts labels and you have to go to the USDA’s nutrient composition data base to find out what the details are. You can download the posters in small, medium, large, and extra-large, or just in text format. If you care about which fruit or vegetable has the most of any one nutrient, here’s an easy way to find out. Have fun with them!
They’ve just agreed to remove the trans fats. So now their donuts will be “Trans fat-free.” Progress? I wonder what the new frying oil will be….
Here is an example of how crazy our food system is. Starbucks, according to the Chicago Tribune, is in trouble. Why? “while overall revenue and earnings continued to increase at rates better than 20 percent in its fiscal 2007 fourth quarter [which sounds pretty good to me]…there was a 1 percent slip in average transactions per store in the United States [oops].” That’s all it takes for Wall Street to start predicting doom, apparently.