> Being vegan is easy for someone who does hard physical work, so they have to eat more than 3000 kcal per day. In that case, eating enough proteins that come f

> Being vegan is easy for someone who does hard physical work, so they have to eat more than 3000 kcal per day. In that case, eating enough proteins that come from plant sources will still leave enough in the energy budget to also eat other food, for a complete diet. > On the other hand, if you have a sedentary lifestyle, working in the front of a computer, it is impossible to eat enough protein without eating too many calories. Anecdotal counterpoint - I've done hard physical work for ~2 years. For ~10 years before that and for about 1.5 after I stopped the physical work I've been spending most of my days sitting in front of the computer with the occasional walk to the grocery store. No sport or hiking or fitness. I don't eat TVP or other condensed protein food. I don't count calories or even consciously decide when to eat protein rich food. Sometimes I'll even just eat pasta or other food relatively low in protein and rich in carbs and calories. Yet, I'm in the same physical health as I've always been. Not athletic, but normal weight - the type of weight an annoying aunt would see and say "ooh, you gotta eat more". :) The first BMI calc I tried put me right in the middle of the green zone (yes, I know BMI is not that important). And I could return to the same physical work if I wanted to. Besides my anecdotal counterpoint, there are many sources online you can find where people discuss their diet, how much it costs and their lifestyle. > The solution was to extract at home gluten from wheat flour, to supplement the proteins provided by lentils or other legumes. > any starchy vegetables, e.g. potatoes or sweet potatoes or rice, and any starchy fruits, e.g. bananas, had to be forbidden. That seems very extreme to me. Were you trying to be a bodybuilder or maintain some low body fat or something while maintaining this sedentary lifestyle? I eat potatoes, sweet potatoes and bananas all the time. > I gain weight extremely easily if I exceed my allowable daily energy intake. If that's the case, why not spend some of the calories on exercise? Although I find it hard to believe that with my current and previous sedentary lifestyle I expend enough calories to not care what I eat on a vegan diet, but you gain weight "extremely easily". Do you have some rare disease, if you don't mind my asking? Cause the only fat people I know are the ones who overeat, regardless of diet. Even if they start blaming "slow metabolism" or something else, it's obvious when you see them eat. > There are plant protein extracts, but those are at least 3 to 5 times more expensive than cheap animal protein, e.g. chicken breast. Economy of scale and subsidies. > There already exists a technology for making whey protein concentrate otherwise than by the filtration of milk, i.e. by extracting it from a culture of genetically-modified Trichoderma fungus. Interesting. Although I don't see myself buying it, I'll look it up. > fake meat It's as real as you can get. "Fake meat" would be TVP prepared like meat. You wouldn't say "fake whey protein" if you extract it from genetically-modified Trichoderma fungus.