Hello, I was wondering about research done on the possible environmental causes of essential thtombocythemia. I tested positive for JAK2 three years ago and have been on Hydroxyurea 500mg pills for the last two years. I notice a steep decline in my platelet count each time I am overseas for more than a month. At first, I thought it sheer coincidence, but this is the third time it has happened. Has anyone had a similar experience? I've come across some research on the possible connection between radon and essential thrombocythemia. Has anyone looked into other types of research on the impact of the environment, such as water quality and ET?