When I first started, and was trying to figure it all out with regard to what to eat, and when (as I am doing intermittent fasting, also), as well as get my system ‘balanced out’, I dropped nearly 15 pounds. Now, about 8 months later, I am back to about the same weight I was. Of course, I haven’t been as diligent on the eating as I was at the start (and I’ve been hitting the weights a bit more, also), so I might be able to drop a few pounds. I’m trying to be careful about that, though, because I had a body scan in the middle of this (DexaFit) when I was about midway between the two ends of my weight range, and found that I was at 8% body fat. so, I really can’t lose much more without either starting into the ‘unhealthy’ range, or losing muscle mass (which isn’t something I’m particularly interested in doing).
There is truly a lot to learn and understand about keto (and athletic performance on keto) as it is generally the opposite of what we have all learned growing up: Carbs good! Fat bad! And it’s also not just about the macronutrient composition of the foods, but also the quality (eggs generally good, but eggs from pasture-raised chickens are superior to caged, corn-fed chickens. Same with beef. And butter. And so on.)
Also, and this is perhaps the really tough part: everyone is different. So, what works for me may not work for you. So, there’s a lot of experimenting to be done.
Edit: Most of the weight that I lost initially was likely just water weight, due to burning up some excess carbs, as well as not having enough salt in my diet (which the Standard American Diet - SAD - says to cut back on - because of the high glucose - but which you need to increase on a ketogenic diet - since you’re shedding glucose). I started to get the weight back when I figured the balance.