Comment by dahart

Isn’t 2.5kg / week weight loss extreme, and unhealthy or bordering impossible? It seems to be usually recommended to stay below 1kg per week, a healthy rate seems to be closer to 0.5kg/week. I’d assume that something might have been happening the first two months. Could be a measurement problem as well, that you were catching water-weight highs and then maybe changed the timing of your measurements? If you were actually losing closer to 0.8kg / week without knowing it for three months, that’d be about 10kg.

How much more are you eating exactly? Have you changed your exercise routine or physical habits? The problem with calling CICO stupid is that it’s two-thirds physics. The only way to gain mass is to eat it, and the only way to lose mass is to burn it off through RMR and exercise. There’s mountains of data demonstrating that humans gain weight when eating more than they burn, and lose it when burning more than they eat. The people who seem to lose/gain weight abnormally are just people who’s bodies burn calories in unusual ways. That’s rare and statistically unlikely, but even that still follows CICO.