If you have been diagnosed as having poor circulation then the damage has already been done however two things that you can do to reduce the deterioration is to stop smoking (if you are a smoker), and control your cholesterol level.

But the difficulty is that if the damage to your circulation is very bad, and your feet do not get enough blood carrying oxygen to the tissues then this puts you at risk of injury due to reduced sensation, infection of any wounds which heal very poorly and the long term outlook is amputation.

So you need to have a serious chat with your vascular surgeon about the current state of your circulation and compare this to the risks of surgery. For many people, having surgery will greatly reduce the risk of amputation and also enhance quality of life by allowing return to better mobililty as well as reduced pain.

I appreciate that the cost of surgery is a challenge, however dealing with this now, rather than after too much damage has been done will actually be more cost effective in the long run. It is worth asking the hospital about payment plans or looking to see if you would be eligible for any charity support.