The Immune System

• Acute Immuntity, which is to say getting the immune system to work harder for a short time, to fight off something like a cold or a flu. We've also included here agents that kill germs directly, even if they do little for the immune system itself.
• Deep Immunity, which is to say slowly but deeply nourishing and strengthening the immune system. This isn't so much for people who have a cold or flu right now, but for people whose immune systems are weakened: people who get sick a lot, or who have chronic illnesses such as cancer or chronic viral hepatitis.
• Autoimmunity, which is to say, situations when our immune systems get confused and attack parts of us.

There is a going to be a lot of overlap between these categories. The lines we draw between them are in many ways pretty arbitrary.