We basically rid your diet of anything that is known to cause/aggravate inflammation. Then slowly add things back so you can see how you personally react/feel. We do re-introduce greek yogurt later (2nd week I believe) but no other dairy. Most nutritionists don’t recommend dairy for many reasons (often full of antibiotics, many people intolerant, we are the only species that drinks milk past infant hood or that drinks another species’ milk, etc…) However, most people CAN tolerate yogurt / kefir (the fermenting process changes it in beneficial ways ) plus there are probiotic and protein benefits. (sticking to organic and sugar free of course 😉 ) Once you’ve completed the 28 days, you can test out other dairy, and use your own discretion as to whether you wish to add it back in on the regular.