An issue that seems to pop up with some regularity is that some people (especially women) experience a puzzling weight gain on paleo, and now the same has happened to me.
I started paleo at the beginning of September. For the first two months I maintained my normal weight (120 lbs) with about 2000 calories a day. And since then my weight has gradually crept up to 126. This might not seem like a lot, but my weight has been around 120 lbs for the last 30 years, give or take a pound or two. And this is not just random fluctuation. My clothes are tight, and the scale shows 126 day after day. This is not fat into muscle - my waistline has expanded and my body fat percentage increased. I don't feel fitter, just fatter.
I keep records of my caloric intake and energy burned through exercise for ever day, and this is what appears to have happened: I now only need 1600 calories a day to maintain my weight, and anything more leads to weight gain.
My carb to fat to protein ratios haven't changed significantly. The amount of calories I burn through exercise hasn't changed. The type of exercise I do has changed only marginally. (I keep daily records through Fitbit and Cron-o-meter, so this isn't just guessing).
In other words, I seem to now need 400 calories less per day to maintain my weight. Maybe forever?
Any thoughts on why this might be?
UPDATE: As per some of the recommendations I upped my net carbs to around 120g a day, via sweet potatoes and bananas. I've also continued to eat 300 cals less than before, and the weight gain has stopped and is gradually reversing. I do think I now need need around 250 fewer daily calories than before. My theory is that meat, coconut oil and oily fish are completely digested, whereas I used to eat a lot of high-fiber carbs which probably don't get fully digested, and perhaps even lower the absorption of fat and protein. Oh well.