question: Hi, I  am 68 years old female and retired 3 years ago from a job where i was seated all day. On retirement I stopped casual smoking for good, got a rescue dog to walk and have an allotment so am now on my feet and active all day. I eat more healthily now and eat less snacks however i have steadily gained 2 st in weight, have swollen feet and ankles even when weather now cooler  some discolouration there and this swelling is now impeding my walking and some stiffness along outside edges of feet also. I have had an MOT for general health and done postal bowel cancer tests negative result there. What might be the cause?