Like "After my Dad devolped a 2nd blod clot he was on blood thinners for the rest of his life. Same with my sister's Father-in-law. When I was talking with my Vascular surgeon about my risk of blood clots he explained if you get one you are on the thinners for a short while. If you form a 2nd one the thinners are for life. The risk of forming more clots is just too high."