When CKD or dialysis patients visit our OPD, they often carry several myths about food and kidney health. These myths have always led to confusion and wrong choices in them, sometimes worsening the condition. It becomes very important to bust these myths and explain the facts in a clear, patient-friendly way. A kidney-friendly diet is not about strict restrictions, but about balance, correct choices, and tailoring foods to individual needs. With the right guidance, patients can follow safer, healthier eating habits. So, to bridge this gap, we have busted here some famous myths about renal diets which we heard the most along with the clear explanation facts and some better alternatives.

Myths and Facts

Myth 1: I should eat all kinds of proteins.

Fact: Not all proteins are safe for dialysis patients. High-protein foods can generate nitrogenous waste, which kidneys cannot filter properly. Both the quality and quantity of protein matter. High-quality proteins like eggs, lean meats, or paneer in measured amounts provide essential amino acids without overburdening the kidneys. Following the amount prescribed by the dietitian is key.

Better Alternatives:

• Egg whites – rich in high-quality protein, low in phosphorus.
• Paneer (homemade, in controlled amounts) – safer than hard cheese.
• Chicken or fish (boiled/grilled, not fried) – lean animal protein source.

Myth 2: Coconut water is a healthy drink for everyone.

Fact: Coconut water is high in potassium, which is dangerous for CKD and dialysis patients. Excess potassium can cause serious heart rhythm problems. While it looks natural and refreshing, it is not kidney-safe. Patients must restrict potassium-rich drinks, even if they are natural.

Better Alternatives:

• Lemon water – refreshing, low in potassium.
• Jeera (cumin) water – aids digestion, kidney-safe.
• Plain filtered water – safest hydration option.

Myth 3: Rock salt (Sendha Namak) is safer than regular salt.

Fact: Whether it is table salt, rock salt, or Himalayan pink salt, all are high in sodium. Excess sodium increases blood pressure, fluid overload, and swelling, all harmful for CKD patients. The myth of “safe salt” misleads patients into overusing it. The safest approach is to limit salt intake altogether.

Better Alternatives:

• Use natural herbs and spices (jeera, ajwain, dalchini) for flavor.
• Add lemon juice to enhance taste without extra salt.
• Try garlic, ginger, or fresh coriander for seasoning.

Myth 4: Green leafy vegetables should be completely avoided.

Fact: Green leafy vegetables like spinach, methi, or bathua are rich in nutrients, but they contain potassium. Instead of avoiding them completely, patients can use the leaching method (boiling, draining, then cooking). This reduces potassium levels and makes them safer to eat in moderation.

Better Alternatives:

• Lauki (bottle gourd), tinda, parwal – naturally low in potassium.
• Cabbage and cauliflower – safe when cooked properly.
• Leached spinach/methi – nutrients retained, potassium lowered.

Myth 5: Once I start dialysis, I can eat anything.

Fact: Dialysis removes some waste, but it does not clear everything. Eating without control can still cause fluid overload, high potassium, and bone problems. In fact, after starting dialysis, a more controlled diet becomes even more important to maintain good health and avoid complications.

Better Alternatives:

• Plan meals as per dialysis schedule with dietitian.
• Take controlled amounts of fruits and fluids.
• Focus on high-quality proteins and low-potassium veggies.

Myth 6: Herbal or Ayurvedic juices (like coriander water) improve kidney function.

Fact: No herb or juice can reverse kidney damage once function declines. Some herbal drinks may even increase potassium or fluid retention, worsening the condition. Patients should avoid relying on untested remedies and instead follow medical treatment and a prescribed diet.

Better Alternatives:

• Plain water (measured as per fluid restriction).
• Light herbal teas (mint, chamomile) without added potassium.
• Safe homemade flavored water (with cucumber or lemon slices).

Myth 7: Millets are healthy and can be eaten daily.

Fact: Millets are popular as “superfoods,” but not all are kidney-friendly. Some are high in potassium and phosphorus, which can be harmful for CKD patients. Moderation and choosing the right type (as advised by a dietitian) is very important.

Better Alternatives:

• Rice and wheat (in controlled amounts).
• Little millet or barnyard millet (lower potassium varieties).
• Suji or refined flour dishes in moderation.

Myth 8: Vegetarian food is always safe for kidneys.

Fact: Vegetarian food can also contain high levels of potassium (bananas, tomatoes) or phosphorus (nuts, beans). Simply being vegetarian does not mean it is safe for CKD. Careful food selection and portion control are essential.

Better Alternatives:

• Safe vegetables: lauki, ridge gourd, cabbage, beans.
• Fruits: apple, pear, papaya (in limited portions).
• Protein: paneer, leached pulses in controlled portions.

Myth 9: I can trust diet tips from the internet.

Fact: Every CKD or dialysis patient’s diet is unique and must match their lab results, stage of kidney disease, and dialysis routine. Internet tips are general and may cause harm if followed blindly. Always rely on your nephrologist or renal dietitian.

Better Alternatives:

• Seek personalized diet charts from a renal dietitian.
• Keep a food diary and review it in follow-up visits.
• Ask your doctor before making any diet change.

Myth 10: Eating Carrots Will Fix Your Vision

Fact: Carrots contain vitamin A, which supports good vision, but they do not cure nearsightedness or astigmatism. For long-term eye health, a diet rich in leafy greens, citrus fruits, fish, and nuts is more beneficial than relying on carrots alone.

Better Alternatives:

• Leafy greens (spinach, kale) – rich in lutein and zeaxanthin for eye health.
• Fatty fish (salmon, tuna) – omega-3 fatty acids help prevent dry eye.
• Citrus fruits – vitamin C supports healthy eye blood vessels.

Conclusion

Patients with CKD and those on dialysis often face myths that seem convincing but are not medically true. Following such myths can delay proper treatment or even worsen their condition. By understanding the real facts and making diet choices under professional guidance, patients can live healthier lives. A personalized renal diet, safe, balanced, and supervised, is the strongest weapon against kidney disease complications.