A chronically imbalanced body budget acts like fertilizer for disease. In the last twenty years, it has become clear that the immune system is an ingredient in far more illnesses than you might expect, including diabetes, obesity, heart disease, depression, insomnia, reduced memory, and other “cognitive” functions related to premature aging and dementia. For example, if you already have cancer, inflammation makes tumors grow faster. The cancer cells also become more likely to survive the perilous journey through the bloodstream to infect other sites in the body, a process called metastasis.
