
Cats' urine is naturally slightly acidic, with a pH value of around 6.0–6.5. If their urine becomes too alkaline, they may be at risk of developing urinary illnesses, such as FLUTD (Feline Lower Urinary Tract Disease). The pH level in cat urine can mean the difference between health and illness. A cat's diet and health status can influence their urine pH. To lower the pH of cat urine, feed it wet food and ensure it drinks plenty of water. A raw cat food diet is ideal as it doesn't contain plant-based foods and is high in moisture.
| Characteristics | Values |
|---|---|
| Normal pH range for cat urine | 6.0-6.5 |
| pH above the normal range | May be caused by urinary tract infections or a plant-based diet |
| pH below the normal range | May be caused by kidney disease or a diet high in animal protein |
| Effect of pH above the normal range | Can lead to the growth of struvite crystals, which can cause urethra obstruction |
| Effect of pH below the normal range | Can lead to the formation of calcium oxalate crystals |
| Ways to lower pH | Feed wet food, ensure adequate water intake, provide multiple small meals instead of one large meal |
| Ways to increase water intake | Provide access to clean water, use a water fountain, add ice cubes to the water bowl, place multiple water bowls |
| Diet recommendations | Raw cat food, avoid plant-based ingredients, feed canned food for increased water content |
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What You'll Learn

The importance of hydration
Water is essential for the health and vitality of all living beings, including cats. It is critical to maintaining a healthy pH balance in your cat's body and preventing urinary tract problems. Cats need acidic urine to maintain urinary tract health, and water plays a key role in achieving this.
The pH of a substance measures its acidity or alkalinity. On the pH scale, 7 is neutral. Values below 7 are acidic, while those above 7 are alkaline. The normal, healthy pH range for cat urine is between 6.0 and 6.5. A lower pH indicates higher acidity, while a higher pH indicates greater alkalinity. When the pH of a cat's urine deviates from this healthy range, it can lead to the formation of crystals and stones, which can cause irritation, bleeding, and even life-threatening urinary blockage.
To maintain a healthy pH balance and support urinary tract health in cats, proper hydration is crucial. Water dilutes urine and helps prevent urinary tract issues. Cats should always have access to clean, fresh water to encourage hydration. It is recommended to place multiple water bowls throughout the house, in every room if possible, to make it convenient for your cat to drink frequently. Additionally, you can encourage water consumption by running the faucet, adding ice cubes to the water bowl, or using a water fountain.
Wet food, such as canned food, can help increase your cat's water intake. If your cat is resistant to eating wet food, you can gradually transition them by adding water to their dry kibble or using water from canned tuna. It is important to make dietary changes slowly over a few weeks to avoid upsetting your cat's stomach. Consult your veterinarian to determine the best dietary choices based on your cat's specific needs and to monitor your cat's urine pH through urinalysis.
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Wet food vs dry food
A cat's urine pH should be slightly acidic, with a normal range of 6.0 to 6.6. If the pH is too high or low, crystals can form in a cat's urine, which can lead to irritation, bleeding, and blockage. To lower the pH of your cat's urine, you can increase its water intake and feed it wet food.
Wet food is a great option for cats that don't drink enough water, as it has a high moisture content that supports hydration. It is also beneficial for cats with health conditions that require extra hydration, such as kidney disease and urinary tract issues. Additionally, the strong scent of wet food can make it more enticing for cats, especially older cats with a reduced sense of smell.
However, wet food is typically more expensive than dry food and has a shorter shelf life once opened. Dry food is more affordable and convenient, as it can be left out for longer periods and used in automatic feeders or puzzle feeder toys. It is also easier for cats to overeat with wet food, as it is less calorie-dense than dry food, which can lead to weight gain.
Ultimately, the decision to feed your cat wet or dry food depends on various factors, including your cat's health, nutritional needs, and your budget. It is essential to consult with your veterinarian to determine the best diet for your cat's specific needs. A combination of both wet and dry food may be beneficial, providing your cat with the advantages of both options.
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Frequency of meals
The frequency of meals plays a crucial role in maintaining a balanced pH in your cat's diet. Urinary tract health is closely linked to a cat's diet and health status. Cats are particularly susceptible to urine pH issues, which can lead to the formation of crystals and stones. These crystals can cause irritation, bleeding, and even life-threatening blockages.
To maintain a healthy pH balance, it is recommended to feed your cat several small meals throughout the day rather than a single large meal. This helps to regulate their nutrient and calorie intake, preventing a spike in pH alkalinity. Aim for 4-6 small meals spread throughout the day. For example, you could give your cat a small scoop of food in the morning before you leave for work and another scoop when you return. Provide two additional scoops later in the evening to ensure they are receiving adequate nutrition.
If your cat is resistant to eating wet food, you can gradually transition them by dampening their kibble with water or tuna juice. Cats can be picky eaters, so it may take some time for them to adjust to a new diet. It is important to make sure your cat stays well-hydrated during this transition. Always ensure they have access to fresh, clean water, as proper hydration is essential for maintaining urinary tract health and optimal pH levels.
Additionally, consider using acidifiers to help regulate your cat's urine pH. Ingredients like dl-Methionine, cranberry powder, vitamin C, and sodium bisulfate can help maintain the desired urine pH range of 6.0-6.6. However, use these supplements in moderation, as an overly acidic urine pH can also lead to the formation of calcium oxalate crystals.
If your cat is experiencing urinary health issues, it is important to consult your veterinarian. They can guide you on specific dietary choices and recommend prescription diets or urinary health formulas to help manage your cat's condition effectively.
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Urinary tract health
The pH level of a cat's urine is a critical factor in maintaining urinary tract health. Cats are naturally inclined to consume meat, and their urine is typically slightly acidic, with a pH ranging from 6.0 to 6.6. A pH level that deviates too far in either direction can lead to the formation of crystals and stones, which can cause irritation, bleeding, and even life-threatening urinary blockages.
To maintain a healthy urinary tract, it is essential to provide your cat with ample water and a balanced diet. Water is crucial in diluting urine and preventing urinary tract issues. Ensure your cat always has access to fresh water and consider placing multiple water bowls throughout your home to encourage hydration. Additionally, you can enhance hydration by adding water to your cat's kibble or providing it through a syringe if they are resistant to drinking enough water directly.
The type of food you feed your cat also plays a significant role in maintaining urinary tract health. Wet food, such as canned food, is often recommended for cats with urinary issues due to its higher water content. A raw, balanced cat food diet that aligns with their natural carnivorous tendencies is ideal. This type of diet is high in moisture and free from plant-based foods, which can contribute to more alkaline urine. If transitioning to a new diet, do so gradually over a period of 4 to 6 weeks, slowly increasing the ratio of new food while ensuring your cat maintains a healthy food intake.
For cats on a plant-based diet, it is especially important to monitor urine pH levels as these diets tend to make urine more alkaline. Male cats, in particular, may require supplements with acidifiers like cranberry powder, vitamin C, or sodium bisulfate to help dissolve struvite crystals that can form in the urine. However, it is crucial to use acidifiers in moderation, as an overly acidic urine pH can lead to the formation of calcium oxalate crystals, which can also cause complications.
If your cat is experiencing urinary tract issues, it is always best to consult your veterinarian. They can guide you in interpreting urine test results and determining the best dietary choices for your cat's specific needs. Prescription diets are available for cats at high risk of crystal and stone formation.
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The use of acidifiers
To bring the urine pH back to the normal range, cats, especially male cats, can be supplemented with acidifiers, which help to dissolve struvite crystals. Acidifiers can include ingredients like dl-Methionine, cranberry powder, vitamin C, and sodium bisulfate. These acidifiers are often added to popular vegan dry kibbles to help maintain acidity in the desired range. It is important to provide these supplements in moderation, as too much can lead to overly acidic urine, resulting in the formation of another type of crystal called calcium oxalate.
In addition to acidifiers, it is important to ensure proper hydration in cats. Increasing water consumption can help reduce the risk of struvite and calcium oxalate stones by diluting the urine. This can be achieved by placing multiple water bowls around the home and adding water to dry food or using a syringe to provide water directly.
Veterinarians can provide guidance on dietary choices and urine pH monitoring. They may recommend a special colour-changing litter or litter additive to help monitor pH levels at home. Prescription diets are also available for cats at high risk of crystal and stone formation.
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Frequently asked questions
A cat's urine pH should be slightly acidic to maintain urinary tract health. When the pH is too high or too low, crystals can form in a cat's urine, causing irritation, bleeding, and/or blockage.
If your cat's urine pH is too high, it may be caused by a urinary tract infection or diet. A pH above the normal range can lead to the growth of struvite crystals. If the pH is too low, it may be caused by kidney disease or diet. Low urine pH can lead to the formation of calcium oxalate crystals.
To lower your cat's urine pH, feed it wet food and ensure it stays well-hydrated. You can also try feeding your cat several small meals throughout the day instead of one large meal.
Feed your cat a diet high in animal protein, as this has an acidifying effect on urine. You can also try adding more water to its diet by dampening its kibble with water or water from canned tuna.
Prescription diets are available for cats at high risk for crystal and stone formation. Non-prescription options include Purina Pro Plan wet food and Weruva's Frisky Fishin' Friends Variety Pack, which are both formulated to support urinary health. For cats with chronic kidney disease, vets may prescribe Hill's Prescription Diet k/d, which helps to maintain urine pH and prevent crystal formation. Additionally, studies have shown that calculating the food base excess (BE) of a cat's diet can help formulate and balance kibble diets to influence urine pH.











































