[Written by a Veterinarian] Do Cats Need Glucosamine and Chondroitin? Joint Care Effects and Precautions

"Lately, my cat seems to have trouble jumping." "I feel like their joints are stiff." Have you ever noticed such changes in your cat?
For senior cat joint care, ingredients such as glucosamine and chondroitin are gaining attention.
In this article, a veterinarian will gently explain the effects, necessity, and precautions of these supplements.

The Relationship Between Feline Joint Problems and Glucosamine/Chondroitin

What are the Symptoms of Feline Joint Problems?

As cats age, they tend to develop joint problems. The most common joint problem in cats is osteoarthritis. Symptoms of arthritis increase in cats aged 6 and older, and it is estimated that 90% of cats aged 12 and older have some form of joint problem. In some cases, arthritis can occur as early as 1 year of age.

Cats with joint problems may stop jumping or hesitate to go up and down. They may also play with toys less often and spend more time resting. They may stop scratching, leading to thickened claws that can pierce their paw pads.

The Role of Glucosamine

Glucosamine is a type of amino sugar formed by the combination of amino acids and glucose, playing a vital role in the formation and repair of cartilage. Glucosamine is a substance that forms cartilage, which acts as a cushion for joints and prevents bone-on-bone friction. While glucosamine is produced in the cat's body, its production decreases with age, leading to a reduction in cartilage and subsequent bone-on-bone collisions that cause arthritis.

The Role of Chondroitin

Like glucosamine, chondroitin is a substance that forms cartilage. Chondroitin gives elasticity to cartilage and enhances its cushioning properties. This helps to alleviate the impact of bones colliding. Similar to glucosamine, chondroitin is produced in the cat's body, but its production decreases with age, leading to the onset of arthritis.

Cases Where Cats May Need Glucosamine and Chondroitin

Joint Care for Senior Cats (7 years and older)

Arthritis symptoms can appear as early as around 6 years of age, and by 12 years or older, some form of joint problem will emerge. Since the production of glucosamine and chondroitin decreases with age, it is advisable for senior cats aged 7 and older to actively incorporate these supplements.

Cats with Joint Strain Due to Obesity

Obesity is a risk factor for arthritis. Obesity places increased stress on the joints, making them more susceptible to arthritis. While weight loss is the primary goal, using these supplements as an auxiliary measure can be beneficial.

Cats Undergoing Treatment for Injuries or Joint Conditions

Joint conditions such as injuries or dislocations can lead to arthritis in the future. If your cat has pre-existing joint concerns, it's advisable to start these supplements early.

Cats with Genetically Weak Joints

Breeds such as Scottish Folds (osteochondrodysplasia), Maine Coons, and Norwegian Forest Cats (hip dysplasia) are known to be genetically predisposed to joint problems. It is advisable for these cats to take supplements.

Precautions When Giving Glucosamine and Chondroitin to Cats

Do not give human supplements.

Human supplements are formulated based on adult body weight. Furthermore, cats and humans have different metabolic pathways, and even drugs and additives that are harmless to humans can be toxic to cats. Always give products specifically formulated for animals.

Supplements are only auxiliary and not a substitute for main meals.

Supplements are intended to make up for missing nutrients. Therefore, simply taking them alone will not be effective; they should be taken in addition to a well-balanced diet.

Also, giving more does not mean it will be more effective; it is necessary to follow the prescribed dosage and instructions.

Cats with pre-existing conditions (kidney, liver disease, etc.) must consult a veterinarian

Since supplements are not medicines, they are generally less likely to cause side effects. However, if an animal has liver or kidney disease that affects drug metabolism and breakdown, even supplements that are harmless to healthy animals can cause changes in condition in those with pre-existing conditions. Always consult a veterinarian.

Regarding the effects of glucosamine and chondroitin on joints, studies have shown varying results, with some demonstrating certain effects and others showing no change. Therefore, it is important to remember that dramatic improvements are not guaranteed simply by giving these supplements.

Daily Care to Protect Your Cat's Joints

Create a living environment with fewer steps.

Cats with joint problems tend to avoid stairs and other elevated surfaces. Inactivity leads to muscle atrophy supporting the joints, making them even less mobile and worsening joint problems. Installing ramps or steps to make it easier to climb will reduce the strain on their joints.

Reduce joint strain through weight management.

Obesity places considerable strain on the joints. Therefore, if there are joint problems, weight reduction is the first step. In this case, since exercise increases the load on the joints, weight is managed by adjusting food intake.

Promote blood circulation with moderate exercise and massage.

If there are joint problems, strenuous exercise will exacerbate them, so first gently move the joints with massage. Stop if you forcefully move them or hear a grinding sound. If the joints become easier to move and there seems to be no pain, start with light exercise to prevent weight gain and muscle loss.

Aim for a synergistic effect with "supplements + environmental care."

Supplements are merely supplementary. Moreover, the effects of glucosamine and chondroitin may not be very effective. It is important to not only use supplements but also to improve the environment and reduce weight.

Summary: Early Intervention is Key for Feline Joint Care

As cats age, they often develop joint problems. Since joints are difficult to recover once they deteriorate, it is advisable to incorporate supplements before they worsen. Supplements are merely supplementary. In some cases, they may not suit your cat's constitution, so it is best to consult a veterinarian before incorporating them.