True, but especially if you are obese, find your TDEE (Total Daily Energy Expenditure) and make sure you eat close to that. You shouldn't cut more than 1000 cal

True, but especially if you are obese, find your TDEE (Total Daily Energy Expenditure) and make sure you eat close to that. You shouldn't cut more than 1000 calories a day from your needs. If you do that over a long enough time period, you can lose muscle and your metabolism will slow and become more efficient to protect yourself, making it harder to lose weight. If you have already done this, you will have to enter into a period of building exercise and adding muscle weight back onto your body before your metabolism will work the way it should. Sure, this is anecdotal but I was eating 1600 calories a day OMAD and my metabolism dropped to burn 1850 calories a day. (As measured by a VO2 Max machine as part of a dexafit scan), which is about 750 calories a day under what it should have been. My standing body temperature was also hovering around 97.3 instead of 98.6 Since then I've been eating more, closer to 3000 calories a day and exercising with heavy lifting 3x a week and my metabolism has come roaring back. I haven't had another VO2 Max scan but my standard morning body temp is now 98.3. In the months I've been doing that I have gained 1 pound, but I am sure a good chunk of that is muscle.