Kathi: Certain vitamins and supplements act as blood thinners. What I have in mind is megadoses of vitamins C and E. Also, omega 3's. If you notice, whenever you are a new patient at any doctor's office, they ask if you take vitamin E especially. This is because it competes with their prized blood thinners in which Coumadin is basically rat poison. And they know if you take supplements with their drugs, it will double the thinning potency and cause bleeding, which tells me that vitamins, oils and herbs can do just as well by themselves.
Also, to all: a lot of illness(e.g. heart disease, cancers) is based on inflammation, be it viral, bacterial oxidative or whatever. This means we want anti-oxidants in our diets. An ample supply of beta-carotene (a vitamin A derivative), Ascorbic acid and associated bio-flavanoids (i.e. vitamins C and P), cholesterol (a vitamin D derivative), vitamin E (esp natural D-alpha tocopherol) and the mineral selenium are all powerful antioxidants that will guard against heart disease and cancers. And there's a multitude of herbs as well. Even a plain "cuppa Joe" and "black tea", which I drink a lot of, have antioxidants. Just make sure you get good ones as opposed to "instant" processed kinds. Grind your own coffee beans in other words. Good Coffee is good for you.