2015年4月29日星期三

The Foods to Avoid with Kidney Disease

Most of people want to know what is the health foods to avoid kidney disease.

Ask your doctor or renal dietitian—the answer will often be yes. Phosphorus is a mineral found mostly in dairy products and meats. Your body uses it to form strong bones and teeth. But starting in the earlier stages of chronic kidney disease (CKD), your kidneys begin to lose the ability to remove extra phosphorus from your body. Because too much phosphorus can harm your bones, it makes sense to eat less phosphorus.

If you are also on a lower protein diet, a low-phosphorus diet is easier because foods high in protein tend to be high in phosphorus, too. Your doctor may want you to limit dairy servings each day and take a calcium supplement. Taken with meals, calcium supplements act as phosphate binders, because they lock on to extra phosphorus and keep your body from absorbing it.

Having the right level of potassium in your body helps all your muscles work smoothly—including your heart. So, to stay as healthy as you can, you need to keep just the right level of potassium in your blood (not too much, not too little). Keeping potassium at the right level all the time is one of the jobs that healthy kidneys do for your body. When kidneys fail, they start to lose this ability.

Many foods have potassium, but some such as avocados, dried fruits (including raisins, apricots and prunes), potatoes, oranges, bananas and salt substitutes are very high in potassium. If you need to limit potassium, your dietitian will help you learn which foods have more and which foods have less potassium.
Protein—found in meats, fish, poultry, dairy products, nuts and some grains—helps your body form muscle and tissue. But when your kidneys are not working well, the byproducts of protein breakdown can build up in your blood. This can make your kidneys work harder.

Many people with kidney diseasefind that they don't want to eat as much protein as they used to, because food doesn't taste the same. You may even need to make a special effort to eat enough protein and calories, because having kidney disease can reduce your appetite.


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