This started as a rant in, of all things, a thread on toileting in the wilderness. It's something I'd been meaning to bring up, so having written it there I'm reposting part of it here and adjusting as necessary to address diet. Fear not, pooping is only a small part of what follows. A few years ago I started once again to address my health through diet. I started by throwing away all the dogma being pushed by the so called "nutritionists" because I'd followed their advice religiously for years and had gotten fatter and more lethargic. Not only that I had painful and "aggressively aromatic" digestive issues. The truth is that the human body is very complex and has several built in feedback systems that preclude a "one size fits all" solution to dietary needs. For example, if you starve yourself to lose weight, one of those feedback systems will reduce your energy levels to conserve energy while another will decide that you are in a famine and will try to store as much fat as possible to keep you alive. Your body still needs calories to live which it will take from your muscle mass. At the end of the day you will lose total weight, but may carry more fat and less muscle. I'm an engineer and think like an engineer, so I also solve problems like an engineer. I'm actually surprised I didn't come up with this sooner. I decided to start from scratch and came up with a few simple rules based on what I was trying to accomplish, namely having more energy and feeling healthier. I reasoned (correctly, as it turned out) that these would self regulate my need for calories and weight loss would be a side effect. If you follow these rules (and really pay attention) by making one change at a time you can find the magic custom fit for your dietary needs. The four simple rules: If I eat it and it gives me energy it's good. The main purpose of eating is to fuel the body. Eat more of this and less of other things. If I eat it and don't feel an increase in energy it's a waste of money. Would you put gas in your vehicle if it didn't let you drive further than what was already in the tank? If I eat it and it makes me sleepy it never goes in my mouth again (except for certain social reasons). If it makes you sleepy it is being stored as fat as your body processes it. The cleaner your defecation the better the quality of your diet. Man was not created with a roll of toilet paper in hand. Toilet paper is a tool created by Man to overcome poor dietary practices. In case you are interested my personal "magic" combination is FAT Protein Fiber carbohydrates. About 50% of my calories come from fats, 35% from protein, and the remainder for carbs (mostly salad vegetables). Fiber has no calories, but it helps digestion and improves rule number 4 above. I get mine through non starchy vegetables. I don't calorie count. If I need more energy I eat. If I don't need energy I don't feel hungry. This is common in all diets that restrict carbs. I've come to the conclusion that carbs, which are most abundant in nature during the Fall) are nature's way of fattening us up in order to survive the Winter. Your relative combination may be different depending on your body, but if you are an endomorph like me you will probably wind up with a similar ratio. Just follow the rules above and you may be surprised at the transformation that will take place. I'm now over a hundred pounds (45 kilos) below my peak weight and each week brings a new low. My energy levels are increasing as a result of packing around less weight, but more so by eating the foods that give me energy and avoiding those that sap it away.