Can existing varicose veins diminish with exercise and diet?

There is no cure for varicose veins. Treatment falls into two classes: relief of symptoms and removal of the affected veins. Symptom relief includes such measures as wearing support stockings, which compress the veins and hold them in place. This pressure keeps the veins from stretching and limits pain. Other measures include sitting down, using a footstool to support the feet when sitting, avoid standing for long periods of time, and raising the legs whenever possible. These measures work by reducing the blood pressure in leg veins. Prolonged standing allows the blood to collect under high pressure in the varicose veins. Exercise such as walking, biking, and swimming, is beneficial. When the legs are active, the leg muscles help pump the blood in the veins. This limits the amount of blood that collects in the varicose veins and reduces some of the symptoms but does not stop the disease. Source(s): GALE ENCYCLOPEDIA OF ALTERNATIVE MEDICINE

Veins in the legs have tissue flaps that act as one way valves. These valves help insure that the flow of blood is one way, that is toward the heart and not back down the legs. If these valves become incompetent that is they do not function normally then the blood can pool in the legs. This pooling causes distention of the superficial veins in the legs and that is what varicose veins are. They will not go away on their own, if you really want them gone they must be surgically removed.
Varicose veins Surgery is very cheap in India.There is one company that is very famous in India that arranges surgery for foreigners in India.They are called the Forerunners Healthcare.I read a lot about them in the Newspapers and about their patient stories.I have also read that they arrange financing for american and canadian patients as cosmetic surgery is not covered by insurance.They also have photos pasted of their International patients.You can checkout their website.The cost savings are incredible.As a doctor i personally believe that your cosmetic surgery can be easily handled in India as the quality of healthcare available here is simply best in the world.The surgeons are USA/UK trained and facilities are 5 star.If you still havent got your surgery done,you are better off getting it done in India.
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hope this helps
best of luck