Still, It’s a rather drastic change from our standard way of living, and quite difficult to follow. Ketosis involves giving up grains, starchy vegetables, most fruit, sugar, and even excess amounts of protein.
I’m all for avoiding grains, but I can’t say the same for starch in general. Grain avoidance has a long history, while avoiding starch is new. Taoists call it Bigu. (starches refers to grains here.)Ge Hong(c. 320 CE)-writes in the Baopuzi:
I have personally observed for two or three years men, who were foregoing starches, and in general their bodies were slight and their complexions good. They could withstand wind, cold, heat, or dampness, but there was not a fat one among them. I admit that I have not yet met any who had not eaten starches in several decades, but if some people cut off from starches for only a couple of weeks die while these others look as well as they do after years, why should we doubt that the (deliberate) fasting could be prolonged still further? If those cut off from starches grow progressively weaker to death, one would normally fear that such a diet simply cannot be prolonged, but inquiry of those pursuing this practice reveals that at first all of them notice a lessening of strength, but that later they gradually get stronger month by month and year by year. Thus, there is no impediment to the possibility of prolongation.”I can distinctly remember one night eating some rice, only to have the most prophetic dream. I found myself looking at my arms, horribly bloated and overweight. I was told that unless I adopted something close to the ketogenic diet, I’d end up like this.
That being said, I’d strongly advise agianst following the ketogenic diet proposed by the internet at large unless you have medical supervision. It’s too extreme, you don’t need that much fat or that few calories.
By avoiding grains and processed food, eating sensible portions along with dairy, eggs and meat, you should be getting what your body needs without consulting a spreadsheet.
If continual ketosis was natural, do you really think you’d have to worry so much about ruining it?
I wouldn’t limit your carbohydrate intake to 30-40grams per day, instead eat sensible amounts, don’t overeat and avoid high glycemic foods.