
24/08/2022
New Australian research has shown that we may have been overestimating how many calories we get from nuts!
Historically, the Atwater system is used globally to calculate energy (calories) from food, and this is the mandated measuring system for many of the world’s food labels. The system determines energy based on grams of fat, protein, carbohydrates and alcohol in a particular food…
😱 But we may be proving that this doesn’t always take into account how our bodies metabolise food!
With nuts, the fat (which contributes to most of the calories) is bound up within the fibrous nut cell walls, so the portion of the fat stays locked within the walls and cannot be absorbed by our bodies. It is excreted out with the fibre.
This aspect has not been accounted for in previous lab measurements used to measure energy in food!
Almonds came out as providing 26% fewer calories, walnuts 22% less, cashews 14% less, and pistachios 5% less.
🇺🇸 Similar findings in the US has led to label changes on some products.
⚠️ The way nuts are eaten may make a difference, however. Changes to the cell wall from crushing nuts or roasting increases the amount of fat that can be absorbed, and as a result, nut butters, crushed nuts and roasted nuts provided more calories. Therefore, we need more research to understand calories in foods eaten raw versus foods eaten after some or a lot of processing.
It’s important health professionals and the public have accurate information about the calories in nuts, and not base health aspects of food just on calories. Increasing nut consumption is a simple dietary change that could help reduce the risk and prevalence of some of our most common and chronic diseases including cardiovascular disease, coronary heart disease, various cancers and diabetes.
Bottom line: a mix of nuts are really good for you - dont be afraid to go ahead and enjoy a handful!