Blood has its own filtering system, all thanks to the kidneys. Kidneys are important organs with multiple functions. Humans can live without kidneys, but dialysis is required. They remove waste and balance fluids in the body.
Diet plays a big role in keeping kidneys healthy. Eating the right foods supports kidney function and overall health. Eating the wrong foods can cause damage. However, some kidney damage may be reversible with a balanced diet and specific dietary restrictions.
This blog explains how diet affects kidney health. It will cover foods to eat and foods to avoid. These tips can help protect your kidneys and improve overall health.
Why Diet Matters for Kidney Health
Kidneys help filter the blood. They remove waste, toxins, and extra fluids. When kidneys do not work properly, waste builds up. This can lead to serious health problems, like chronic kidney disease (CKD).
According to the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), a kidney-friendly diet can help slow kidney disease. The right foods help manage blood pressure, blood sugar, and fluid levels. This reduces strain on the kidneys.
Foods to Eat for Healthy Kidneys
Certain foods help protect the kidneys. According to the American Kidney Fund, a kidney-friendly diet includes:
1. Low-Sodium Foods
Too much salt can raise blood pressure. It can also lead to swelling as the body retains water to dilute the sodium. High blood pressure can damage the kidneys. Choose foods that are low in sodium. Some good options include:
- Fresh fruits and vegetables
- Whole grains like brown rice and whole wheat bread (stick to smaller portions)
- Lean proteins such as skinless chicken, fish, and turkey
- Herbs and spices instead of salt
2. Foods with the Right Amount of Protein
Protein is needed for muscle and tissue repair. But too much protein can strain the kidneys. Your kidneys may have to work harder to filter excess protein. It is important to eat the right amount. According to Healthline, the American Kidney Fund, and NIDDK, healthy sources of protein include:
- Eggs
- Fish
- Skinless poultry
- Small amounts of nuts and seeds
People with kidney disease may need to limit protein intake. A doctor or dietitian can help determine the right amount.
3. Low-Potassium Foods
Potassium helps muscles and nerves function. But too much potassium can be harmful if kidneys are weak. Potassium buildup can lead to heart issues. According to NIDDK and Healthline, people with kidney disease should eat low-potassium foods such as:
- Apples
- Berries
- Cabbage
- Green beans
- White rice
Some foods, like potatoes, can be eaten in small amounts if soaked or boiled. This helps minimize the content of potassium in potatoes.
4. Low-Phosphorus Foods
Phosphorus is a common mineral found in many foods. Too much phosphorus can weaken bones and damage blood vessels. People with kidney disease should limit phosphorus. Many foods contain added phosphorus, so check ingredient labels for “PHOS,” which indicates phosphorus content. NIDDK and Healthline suggest choosing:
- White bread instead of whole wheat
- White rice and pasta instead of bran cereals
- Fresh meats instead of processed meats
- Small portions of dairy
5. Foods High in Healthy Carbohydrates
Carbohydrates give the body energy. They are a good choice if protein needs to be limited. According to the American Kidney Fund and Healthline, good sources of healthy carbs include:
- White rice
- Vegetables
- Whole wheat bread
- Apples
- Berries
Foods to Avoid for Kidney Health
Some foods can harm the kidneys. Healthline suggests that people with kidney disease should avoid:
1. High-Sodium Foods
Too much salt can cause high blood pressure and swelling. Foods high in sodium include:
- Processed meats like ham, bacon, and sausage
- Canned soups and vegetables
- Fast food and frozen meals
- Salty snacks like chips and pretzels
Reading food labels can help reduce sodium intake. Look for “low sodium” or “no salt added” on packaging.
2. High-Potassium Foods
Potassium is good for healthy kidneys but harmful for weak kidneys. Healthline lists foods high in potassium that should be avoided:
- Bananas
- Oranges
- Potatoes
- Tomatoes
- Avocados
People with kidney disease should check their potassium levels with a doctor.
3. High-Phosphorus Foods
Phosphorus can build up in the blood if kidneys are not working well. Healthline, the American Kidney Fund, and NIDDK state that foods high in phosphorus include:
- Dairy products like cheese and milk
- Dark-colored sodas
- Processed foods
- Nuts and seeds
4. Red Meat and Processed Meats
Too much red meat can increase kidney disease risk. Processed meats are high in sodium and phosphorus. The American Kidney Fund suggests eating lean proteins instead.
5. Sugary and Junk Foods
Sugary drinks and junk foods are bad for kidney health. They can lead to weight gain, diabetes, and high blood pressure. According to the American Kidney Fund and Healthline, foods to limit include:
- Soda
- Candy
- Packaged foods
- Ice cream
Tips for a Kidney-Friendly Diet
Eating the right foods can help protect kidney function. Here are some tips from NIDDK and the American Kidney Fund:
- Limit water and other fluids, but drink enough to flush out waste.
- Cook fresh meals instead of eating processed foods.
- Limit salt by using herbs and spices for flavor.
- Work with a doctor or dietitian to create a balanced meal plan.
Visit Clinicas
Kidney health is important for overall wellness. At Clinicas del Camino Real, Inc., we offer Primary Care Services that provide resources and support for your journey to better health. Eating the right foods can support kidney function, while avoiding harmful foods can help prevent further damage.
At Clinicas, your health is in good hands. Our dedicated team can guide you in making healthy food choices that support your kidneys.
You are not alone in your health journey. We are here to support you every step of the way. Schedule an appointment today. Together, we can create a plan to protect your kidneys and improve your quality of life.