Dr. Luiza Aliyeva, a cardiologist at the Institute of Clinical Medicine of Pirogov University, reported that prolonged exposure to sunlight exacerbates varicose veins due to disruption of body temperature regulation and the risk of dehydration.
She points out that at high temperatures blood vessels dilate, and fluid loss leads to increased blood viscosity, which increases venous congestion.
She says: "The reason varicose veins worsen in the summer is that in high ambient temperatures, the blood vessels in the skin and subcutaneous tissues dilate, helping the body to get rid of excess heat. Therefore, people with chronic venous insufficiency may experience increased venous congestion. Fluid loss due to increased sweating is an additional factor. If lost fluids are not replaced immediately, the properties of the blood change, which may worsen the symptoms of venous insufficiency. That is, high temperatures themselves do not cause blood clots in all varicose vein patients. But high temperatures, dehydration, and prolonged immobility can impair venous blood flow and increase the risk of complications."
According to her, the main way to prevent the condition from worsening is to reduce blood stagnation. Therefore, she advises avoiding prolonged sitting in hot weather. She also emphasizes the benefits of regular walking and simple leg exercises.
She says: "Reducing blood stagnation remains the primary way to prevent varicose veins. Avoid standing or sitting for long periods without moving, especially during peak heat hours. Regular walking and simple exercises, such as rotating the feet, standing on tiptoes, moving the heels, and others, are also beneficial. Moderate physical activity, such as walking and swimming, can also be added. This activity stimulates the pumping muscles and veins in the calf, and promotes the return of blood to the heart more efficiently."
