Given that we're dealing with active hepatitis C and high blood pressure and insulin-dependent diabetes, I was pretty certain what I'd be doing this week. However, we learned, last Thursday, that Mark has stage 3 kidney disease.
So, I'm doing a mad scramble to learn everything I can about kidneys: health risks, disease symptoms, and dietary recommendations. Do this, don't do that; eat those, never touch these; and always remember ...
One of the last things that the doctor and I talked about was the priority of a renal diet, over a diabetic diet. So, given the 5,000 other options, I decided to focus on food.
Electrolytes
Just as with the liver, electrolyte imbalances seem to be indicative of renal problems. In hepatic conditions, sodium and potassium balances are critical. Apparently, with kidneys, it's a phosphorus and calcium disconnect that triggers red flags.
Source: bettercancersolutions.com
Phosphorus and Calcium
The body needs phosphorus to build and maintain bones and teeth, as well as nerve and muscle function. However, too much phosphorus keeps the body from absorbing calcium. When that happens, the body starts stealing calcium from bones to make up for it.
This leads to weak bones, as well as itchy skin, and bone and joint pain. Eating less peanut butter, cheese, nuts, and ice cream - foods high in phosphorus - is recommended. Non-cola drinks, sherbet, zucchini, broccoli, and non-dairy substitutes for milk products are preferred.
Calcium supplements may be required, with the addition of vitamin D to help maintain proper balance. Cutting out foods that are high in phosphorus may negate the need for calcium pills - something that your doctor should decide, after careful review of lab results.
Sodium and Potassium
Sodium is required by the body to manage fluid levels, regulate blood pressure, and control muscle contractions. Potassium keeps nerves and muscles working properly, especially the heart. Excess of both electrolytes are cleared through the kidneys.
When the kidneys aren't functioning properly, sodium levels may rise; leading to fluid retention in the hands, feet, and face, and an elevation in blood pressure. Excess potassium, found in greens, tomatoes, potatoes, bananas, broccoli, and chocolate, can cause irregular heart rhythms.
It's fairly easy to control salt intake. Simply take away the shaker and carefully read food labels. Obvious items to avoid include bouillon, canned soups and vegetables, salty snacks, bacon, cold cuts, and boxed dinner or side dish mixes. Colas tend to be rather high in sodium, as well.
Proteins and Carbs
This is where diabetes and kidney disease crash - violently.
The body converts carbs, which are hiding everywhere, into sugars. Therefore, a diabetic diet counsels low carbs, more protein. Not too difficult, until you factor in kidney disease.
One of the waste products created when the liver processes proteins is urea, a substance that contains nitrogen and clears through urine. When kidneys don't function properly, excess urea and nitrogen build up in the system. This condition, called uremia, can cause itching, mental impairment, nausea, and fluid build-up in the lungs or around the heart.
(One source indicated a direct correlation between excess urea and muscle loss.)
Obviously, too much protein is detrimental for anyone with kidney disease; just as it is for those with liver disease. But the alternative - carbs - are a no-no for diabetics. As with everything else, a balance between proteins and carbs is critical.
Our Dilemma
With the exception of calcium and phosphorus, these dietary restrictions aren't all that new to us. When Mark was dying from end-stage liver disease, we doled out milligrams of sodium and grams of protein like a miser pinches pennies. It wasn't easy, but we learned and got pretty good at it.
These days, we've got to factor in diabetes. That means the foods he ate, in massive quantities, to make up for being denied proteins are now (pardon the pun) off the table.
Frankly, I'm not quite certain how we're going to put all of this information together (and it's only a small part of what we have to consider) to create a diet that will not aggravate Mark's liver and kidneys, or shoot his blood glucose through the roof.
But I'm working on it. Any and all advice is extremely welcome.