First two DVT's unprovoked except for the flu. Hypo-Thyroid too. On coumadin first, too many side affects, now on Xarelto. Tried all natural blood thinners didn't help. Now on Xarelto and natural blood thinners. Still don't bruise, but little side affects compared to coumadin. Slovinian and Sicilian ancestory (maybe others, but those are the ones I know!).