I've longed considered doing a diet based on mass rather than calories, as mass in vs mass out is a tautology. Maybe I should actually try it soon. It would be

I've longed considered doing a diet based on mass rather than calories, as mass in vs mass out is a tautology. Maybe I should actually try it soon. It would be pretty simple: 1. Come up with a post-meal target weight goal, like say 5 pounds over your current weight, decreasing by 0.1 pounds per day. 2. Before each (significant) meal, weigh yourself. 3. Limit the weight of what you consume to the difference between the target weight at the moment to your current weight. If the target is sufficiently above your current weight initially and the rate of decrease is realistic, it should glide you into the correct portion sizes for your weight loss goal. Your measurements of the food could even include some of the packaging; as long as that's typical, it'll calibrate accordingly. Cooking for yourself? Rather than trying to estimate calories from ingredients, just break out your kitchen scale! Eating at a restaurant that doesn't list the calories on menu items? Just pack a scale!