How to manage your older cat’s weight

Obesity in cats, especially as they get older, can lead to major health problems. Here’s everything you need to be aware of to manage your senior cat’s weight.

Some of the most common health problems associated with obesity in older cats include:

• Diabetes mellitus.
• Arthritis and joint pain, as extra weight places increased pressure on ageing joints.
• Heart and circulatory problems.
• Reduced mobility and exercise tolerance.
• Breathing difficulties, particularly during exercise or hot weather.
• Difficulty grooming themselves, leading to painful matted fur
• Urinary tract problems and reduced ability to maintain good urinary health.
• Lower overall quality of life.

If you’re worried about the impact your cat’s weight could be having on their health, book an appointment with your vet

As cats get older they’re more prone to putting on weight, due to reduced activity and different nutritional needs. If you notice your cat putting on weight it shouldn’t be ignored, as it could lead to some serious health problems. But if you can manage your cat’s weight by making minor diet and lifestyle changes, there’s no reason why your older cat can’t live a long, happy and healthy life for years.

Why older cats gain weight

Many cats naturally become less active as they get older. They may spend more time sleeping, play less frequently and burn fewer calories than they did when they were younger. If their diet remains unchanged, this decrease in activity can gradually lead to weight gain.

Age-related health conditions can also contribute to obesity. For example, cats suffering from arthritis may become reluctant to jump, climb stairs or engage in active play because movement is uncomfortable. Similarly, cats with heart disease or other chronic illnesses may tire more easily and spend more time resting. As energy needs decrease, food portions that were once appropriate may offer more calories than an older cat needs.

Lifestyle factors can play a role too. Indoor cats often have fewer opportunities for exercise, and frequent treats or overestimating portion sizes can gradually add extra calories to the diet. Because weight gain tends to happen slowly, it can be easy for owners to miss the early signs until the cat is significantly overweight.

How to safely manage your cat's weight

If you’re concerned your cat may be overweight, the first step should always be to consult your vet. Sudden or inappropriate weight loss can be harmful, particularly in cats, so any weight management programme should be carefully planned and monitored.

A vet can:

• Assess your cat's body condition score and ideal target weight.
• Check for any underlying health conditions that may affect weight.
• Recommend an appropriate diet or therapeutic weight-management food.
• Calculate suitable daily feeding amounts.
• Create a gradual and safe weight-loss plan.
• Monitor progress through regular weigh-ins and health checks.

Alongside dietary changes, increasing activity levels can help support healthy weight loss. Changes might include:

• Regular interactive play sessions.
• Food puzzles and feeding toys.
• Encouraging climbing and exploration with cat trees or shelves.
• Splitting food into smaller meals throughout the day.
• Measuring portions accurately rather than estimating by eye.

The goal should not simply be weight loss, but improved health, mobility and quality of life. Even a small reduction in body weight can make a meaningful difference to an older cat's comfort and wellbeing.