There is something that can greatly lower one's risk of deep vein thrombosis on flights.  Nattokinase, an enzyme of natto, which is made from fermented soybeans and is the base for miso soup, helps the body dissolve blood clots in veins, which is the cause (virtually the definition) of deep vein thrombosis.  It acts very quickly, so ...

A reader’s 42-year-old cousin has been taking oestrogen for many years as treatment for polycystic ovarian syndrome (PCOS).  She suffered a thrombosis about a year ago and was prescribed the blood thinner warfarin, and had various tests.  However, she has recently been diagnosed with Factor V Leiden, a hereditary blood coagulation ...