You don't seem to be obese. And the kidneys have always worked fine. But the trouble is, every evening your legs swell, and by morning the swelling appears on your face. For some reason, the water does not want to leave your body.
Limit your salt intake. Use soy sauce for many dishes. And when preparing soups and main courses, slightly undersaline them. Try to reduce your intake of foods that can retain water in the body. These are sugar, syrups, eggs, red meat, sausages, canned food, chips, margarine, mayonnaise, alcohol and fatty dairy products.
Introduce as many fiber and potassium foods as possible into your diet. Beneficial for you will be: soy milk, vegetables, fruits, various nuts, legumes, brown rice, poultry and fish. Drink herbal teas and fresh juices made with your hands. Quench your thirst with green tea with lemon balm, lemon, lingonberry.
Get exercise. Avoid a sedentary lifestyle. By moving, you make the fluid in your body move. Sweat and relieve swelling.
Use a diuretic. But, preferably, not with pills. Diuretics, removing fluid, together with it, remove the necessary potassium, iron and calcium. Therefore, use the diuretics provided to us by nature. Eat foods that can remove excess water. These are watermelon, cucumbers, melon, beans, celery, green apples, oats, kefir, honey, beets.
Drink two glasses of lightly diluted lemon juice every day. If you don't like citrus fruits, replace lemon with cranberries. Don't get carried away with green tea. Two mugs a day will benefit your body, but a large amount will drain iron and calcium from your body.
If you can't go without sweets, substitute fruit for cakes and candies. Don't get carried away with sweets that contain sugar. It produces excess insulin, which interferes with the removal of water.
Look for supplements that contain high amounts of calcium. If you are afraid to use them, buy calcium gluconate tablets from the pharmacy. They are even prescribed for pregnant women. Also eat cheese, apricots, cottage cheese.