Healing occurs when the requirements for cellular function are present. The needed substrates must be available. The needed energy must be available. The instructions for cellular performance must be there. The obstacles to healing (such as degenerative cell signaling ) must be removed. We can become optimal healers with careful attention to diet and exercise.
Not only does diet and exercise provide what is needed in the way of nutrients and healing conditions, both participate in providing instructions to cells to provide a roadmap for repair. You are what you eat is true. But, many metabolic processes are highly regulated by hormones that are permissive or encouraging to cellular healing. Intermittent fasting and Ketosis in particular are known to assist in regenerative responses. Accumulated toxic chemicals, such as mercury, can impede healing and should be removed.