When it comes to healthy dieting, there seems to be a lot of, “eat less of that, cut back on this.” Well, new research suggests that there is at least one food that we might be able to eat a bit more liberally, or at least get a few less calories when consuming a standard portion. A study published in the American Journal of Clinical Nutrition found that almonds contain 20% fewer calories than previously thought. The most common way of determining the caloric content of food, the Atwater general factor system, has been around since the late 1800’s, and research conducted at the USDA’s Agricultural Research Service (ARS), suggests it may not be accurate to measure the caloric value of almonds and maybe some other foods as well.
Dr. David Bear, lead ARS researcher, said that the ridged structure of almond cell membranes (fiber) – and perhaps other plant food – may lock in some fat, carbohydrate and protein, reducing their absorption in the digestive tract. After adjusting for the energy and nutrients measured in urine and feces, (I hear they have vacancies in that department) the researchers found that almonds had about 130 calories per ounce, not the accepted 170 per ounce measurement.
Similar research for the same group last year found that pistachios may be 6% lower in calories than previously thought. Dr. Baer suggests that the caloric content of peanuts and whole grains may have been over estimated as well. I am hoping they study cashews next; I’m looking for a 50% reduction in calories!
This does not suggest that if this research is confirmed that these healthy snacks will be freebies, even if they are lower in calories, without managing portions, they can add up fast—but it’s nice to think these foods may add a bit less than we thought.
