"The 4 Phase Histamine Reset Plan" offers an explanation of why our body may experience difficulty processing histamine. The author offers tips on how to address the factors that impact histamine metabolism, and she proposes a regimen consisting of a low-histamine diet, liver care, and gut support. All these steps serve to slow the reintroduction of histamine-rich foods into your diet. Dr. Campbell's book is filled with recipes and guidelines on what supplements to take and how to reduce stress in your life.