Visual portion estimation is systematically biased, leading to a massive underestimation of actual caloric intake for energy-dense foods.

noli's read

The scientific community strongly converges on the idea that systematically weighing food is an essential tool for weight management. Research supports this finding: observational studies and analyses of eating behavior (such as those published in the Journal of the Academy of Nutrition and Dietetics) confirm that individuals frequently underestimate their portion sizes, particularly for energy-dense foods (fats, oilseeds, processed products). It is clinically recognized that visual estimation error is a major factor in stagnation during a weight loss process. While using a scale is a precise measurement tool, it is important to note that this approach can become psychologically restrictive in the long term. The idea that certain foods should be 'forbidden' (such as the butter or cheese mentioned) is a classic behavioral response, although flexible nutrition favors adjusting quantities rather than total exclusion. In short, science validates human imprecision regarding volumes, but the effectiveness of the scale relies on sustainable and non-obsessive application.

the sources

1. 1Chandon P, Wansink B 2007
2. 2Croker H, Packer J, Russell SJ, Stansfield C, Viner RM 2020
3. 3r/loseit