this post was submitted on 27 May 2024
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If you're dieting you're probably overweight so the limit might be a couple hundred calories up.
Also if you skip out on the soda you can lower it a bit too.
Yes, switching to water can drastically reduce the calories in my example.
Daily Calorie use starts at around 2100 for a male 35 y/o at 5'9" and only goes up with physical activity. The number I cited for a big mac meal, 1350, is basically a consumption limit for dieting. Extreme diets go as low as 850 or even fasting. You can in theory still lose weight by consuming any number less than 2100 but the effectiveness will be hard to see and there will be a margin of error in nutritional labeling for calories.
1 pound of body fat = 3500 calories, so if your normal caloric requirement is 2500 calories a day and you instead eat 2000 calories a day, you will lose one pound a week. Which doesn't sound like a lot but if you keep that up for one year you can lose 52 pounds - which is a lot.
Alright, but the daily expenditure will go down alongside your current weight. The average* 35 y/o 5'9" man, who exercises at least 30min a day 5 days a week, who weighs 217 will maintain weight at 2,871 while at 165 lbs will maintain at 2,452.
*average is emphasized to help explain why the calorie number is larger than in previous comments, which were a minimum estimate.
A 420 calorie drop from a 52-pound weight loss implies a resting metabolic requirement for body fat tissue of about 8 calories per pound, which I think is a serious overestimate but I'm not sure. I've seen some sources claim 2 calories per pound for fat and 6 calories per pound for muscle, but other sources have claimed significantly higher amounts.
Yeah it's really hard to pin down consistent numbers on this subject due to both interpersonal differences and demographic trends in data.