Mushrooms offer excellent immune tonification support. They can help build the base of our immune system and encourage us out of a cycle of frequent colds and into a space of more immune stability. They also have numerous anti-cancer actions including reducing the ability of cancer cells to develop their own blood supply (which is necessary for the cancer cells to grow/proliferate - no blood supply, no growth) and helping to neutralize/kill off cancer cells.
All types of mushrooms offer support, including white button, cremini, portobello, shiitake, oyster mushrooms.
Mushrooms are most supportive for our system when they are cooked and they are flexible in all sorts of dishes. They can easily be added to soups, stews, stir fries, bakes. In general, they are a pretty easy food to integrate into our regular routine and will offer us great immune support!
For some people with yeast/candida overgrowth, they will find that mushrooms can exacerbate their symptoms and are best avoided.
As well, from a FODMAP standpoint, most mushrooms are high FODMAP foods and may also need to be avoided by people with Irritable Bowel Syndrome/digestive concerns.