I like
The Elimination Diet: Discover the Foods That Are Making You ...
Book by Alissa Segersten and Tom Malterre
My thinking on food has changed a lot though since i read this.
The basics are to stop all processed foods. That is already a complex issue, but I'm more and more convinced its the biggest part of the story.
Then make sure that you are mostly eating high quality vegetables. Avoid all grains for the moment.
Here are some other recommendations:
• Ensure each meal contains resistant starch and fermentable fiber. Feed microbiome 1/3 of daily food, to ramp up SCFA ie. butyrate.
Resistant Starches sources:
Plantain is best. Green bananas Oats, cooked and cooled potatoes and rice.
Fermentable fibre sources:
Jerusalem artichoke, asparagus, celeriac, chard, root vegetables, Chicory Root, Acacia gum, brussel sprouts, oranges, flax seeds, seeweed (carrageenan), onions.
• Quality of ingredients is key.
• Focus on freshness and quality of fats. No industrially fried food ever. That means no crisps or fake crisps. Eat only oil from olives, avocadoes, coconut. Only heat coconut oil to cook, very low heat, do not heat other oils. Rancid/burnt oils are main source of lipopolysaccharides. Seriously toxic especially in combination with alcohol. Raw chocolate is fine. Cooked chocolate the chances are that fats are rancid/burnt.
• Protein: high quality, raw where possible. small amounts of Parmesan cheese, Jarlsberg for Vit K2. Raw duck eggs and wild eggs. Lamb, liver, small amounts of red meat, preferably raw. Never charred ever. Raw fish, cooked in lemon. When eating lentils and chickpeas soak 24 hours cook 2 hours. Nuts should be fresh, not roasted, still in shells or they go rancid. Not many nuts, but good variety.
• Max. 25 grams fructose max. i.e. 3 bananas day, 3 fruits. If drinking alcohol reduce fructose/sucrose to 0. But avoid alcohol if at all poss..
• Dark leafy greens and salads every meal. Fresh organic vegetables make up 80-90% of bulk and diet. Favour tubers and root vegetables. Purple sweet potato, beetroot.
• 24 hour protein fast every 7 days can really help, and/or 14-17 hour intermittent fast every so often.
• Reduce grains to a minimum. Mostly white rice, cooled.
• Snack on fresh food, fresh veg. Carrots, fennel, Jerusalem artichoke. Try to avoid snacking on the go. Better to be hungry.
• Eat mindfully. If digestion is not particularly good, improve vagus nerve tone; drink bitters with each meal or after meal, hum, sing, omm, wash face in cold water. Research Vagus nerve support for more info.