Paleo food is fantastic. It tastes good and does not cause IBS when you know how to select it and prepare it. Fresh ripe seasonal fruits, nuts in shell, free range animal foods, seasonal herbs & spices, balancing teas, salt only when necessary, fruit, nut & seed oils, butter.
To learn how to balance yourself, study Ayurveda. This is the system that your ancestors used. It is common sense. Western man is insane and has forgotten about common sense. This is why he gets IBS and all the other degenerative diseases.
The book is Frawley, Ayurvedic Healing - a comprehensive guide
Dairy... Supermarkets have only poor quality pasteurized products. I do not recommend these. All my trials with these gave poor results. The best dairy is got straight from the animal or the farmer. I recommend you eat only these milks and eat them alone with no other foods. Bright yellow butter from free range grass fed cows is a superb food. Clarified butter (ghee) is even better.
Cooked Meat, fish and eggs... they should only be eaten in small amounts, in cold weather (below ~10C), with sufficient fat accompanying them, with broth or gelatine, sour teas, salt, garlic, onions, herbs & spices. The ratio of fat to cooked protein is between 2 and 3.5
Those with difficulty digesting fats should use a ratio of 2. If you take mayonnaise then fat intake is unlimited.
Eat a maximum of 100g of meat or fish per meal and eat 40g fat/oil (ratio 2) to 70g fat/oil (ratio 3.5) with it. Satisfactory meats are game, free range goat, venison, beef & red meat from birds. Mutton and lamb should only be eaten when it is extremely cold. Avoid farmed seafood, chicken, & pork. Eat eggs with garlic & salt.
Dried meat & fish... small amounts can be eaten as a snack. You can try the Eskimo trick of dipping it in oil or melted butter before eating if you like. Those with difficulty digesting fats should not try this.
Special animal foods... raw shellfish, raw liver, brains, organ meats, marrow fats, meat broth, and fish stock, should feature in your diet.
Fruits... these should be seasonal & tree ripened. In hot weather they are eaten raw. In cold weather they can be cooked and eaten or made into teas. There are three basic fruits types...
>Raw fruits that are sweet and sour. Examples are berries, stonefruit, kiwifruit, pineapples, mangoes, papaya, tamarillos.
>Raw fruits that are sweet, astringent & sour. Examples are apples, pears, guavas, pomegranates, blueberries, cranberries, quinces.
>Cooked fruits. These are sour & sweet. When cooked fruits become much more sour. They vary... apples are very mild, gold kiwifruits are slightly sour, green kiwifruits are sour, plums are very sour and berries are very, very sour.
>Nightshade fruits such as tomato, tamarillo, capsicum... should be avoided.
Nuts & Seeds... these should be freshly cracked. Most processed nuts are either cooked or heat has been used to process them. Avoid these. Raw almonds, skin on, are safe.
Teas, Herbs & Spices... these have special properties that can be used to help digest your foods. Only drink/eat them when you need to. Never eat them just for flavour.
Honey and Sugars... Paleo man never had a supermarket or a beehive. Sweeteners were highly prized treats. Use them sparingly. New honey is sweet, straight from the beekeeper in late spring and best eaten in hot weather. Old honey (six months or more old) is pungent and is eaten in winter. If honey is not available eat raw sugar or jaggery.
Water... no filtered and chlorinated water supplies existed in Paleo times. Do not drink these. Go to extraordinary lengths to get rain or spring water that tastes great and is not treated. Do a test. Obtain a glass of high quality rain or spring water at room temperature, then fill another glass with municipal tap water. Taste each one.
Difficulty Digesting Fats... if you have a history of severe IBS with fat in your BMs then you may have IBS-B. Do not eat too many nuts and use acid fruit juices to assist you to digest them. Eat emulsified fats as mayo with egg meals. Butter is best eaten soft mixed with a little honey or raw sugar. Eat unemulsified fats (oils, clarified butter) with cooked meat/fish/eggs in a ratio of 2g of fat per gram of cooked protein.
Food combining...
>Eat only one sort of animal food per meal. Eat eggs, but no meat or fish. Eat beef but no goat or venison or egg. Eat one type of fish but no egg or meat.
>Do not eat fruits, veggies or nuts with animal foods. Eat a meat, fish or egg meal and accompany it with water, juices, honey, teas, herbs and spices, but no fruits, veggies or nuts. Eat a fruit, veggie and nut meal, but no meat, egg or fish with it.
>If dairy proteins are eaten, then one type per meal should be eaten alone without any other foods, except water/juices/honey/teas/herbs/spices. So eat yoghurt alone, eat cheese alone and only one sort of cheese.
>Eat melons alone and not with other fruits.
>Never heat honey.
Order of eating... drink water first, then fruit juices & teas with Vitamins, then fruits & nuts OR meat/fish/egg, then fats, then any black/green teas.