I had a mastectomy last November and so far do not have lymphedema. There is a new study showing that weight lifting helps those who do have it. I am wondering if it might also help prevent it. I was told that I should wear my compression sleeve whenever I use my arm a lot such as for skiing or playing golf. But when I wear it for more than a few hours it seems to cause my hand to swell up a bit, perhaps from the restriction. Does anyone know if wearing the sleeve also helps to prevent lymphedema?