Have you been catching more colds lately? Or maybe you’re finding it takes longer to shake them off than it used to? It might be time to give your immune system a little extra attention. Think of your immune system as your body’s own personal army, constantly working to fight off germs and keep you healthy.

The question on many minds is, “Does your immune system weaken with age?” The answer is, unfortunately, yes.¹ That's why it’s so important for seniors to be proactive about taking care of their immune health. The good news is that even though our bodies change as we get older, there are still plenty of things we can do to keep our defenses strong.

A strong immune system means fewer sick days spent in bed, more energy to enjoy your favorite activities, and ultimately, a better quality of life. Here are some easy ways to give your immune system a boost.

Tip #1: Focus on fruits and vegetables

Fruits and vegetables are like little powerhouses packed with vitamins and minerals that help your immune system do its job. Think of them as fuel for your body’s army.

One of the best things about fruits and veggies is that many of them are full of antioxidants. Antioxidants are like tiny superheroes that protect your cells from damage caused by things like pollution and stress. The more colorful the fruit or vegetable, the more antioxidants it usually has!

Check out these immune-boosting foods ,² then read on to learn how you can incorporate them into your daily diet:

Easy ways to incorporate fruits and veggies into your diet

Getting more fruits and vegetables into your diet doesn’t have to be a chore. Here are a few simple ideas to get you started:

• Add a handful of berries to your cereal or yogurt in the morning.
• If you feel hungry between meals or just crave something crunchy, snack on carrot sticks or apple slices.
• Include a colorful side salad with your lunch or dinner.
• Make a delicious and nutritious smoothie using your favorite fruits and vegetables.

Tip #2: Get enough sleep

Sleep is more than just a time to rest—it’s when your body repairs itself and strengthens your immune system. Think of sleep as your body’s nightly tune-up.

During sleep, your body produces special proteins called cytokines. These cytokines are like little soldiers that help fight inflammation and infection.³ When you don’t get enough sleep, your body doesn’t get enough of these important fighters, making you more vulnerable to getting sick.

Tips for better sleep

Feel your best by prioritizing a good night’s sleep, every night. Most seniors should aim for 7 to 8 hours each night.  Here are a few tips to help you get the rest you need:

• Establish a regular sleep schedule by going to bed and waking up around the same time each day, even on weekends.
• Create a relaxing bedtime routine that includes calming activities like reading a book or taking a bath.
• Make sure your bedroom is dark, quiet, and cool.
• Avoid caffeine and alcohol before bed, as they can interfere with sleep.
• Talk to your physician if you have trouble sleeping, as there may be underlying medical conditions or medications affecting your sleep.

Tip #3: Stay active with regular exercise

Regular exercise isn’t just good for your heart and muscles—it can also boost your immune system! Think of exercise as giving a seniors' immune system a workout, making it stronger and more efficient.

Exercise helps in a couple of key ways. First, it improves your circulation, which allows your immune cells to move more freely throughout your body, reaching areas where they’re needed most.⁴ Second, exercise can help reduce stress, which (as we’ll discuss later) can weaken the immune system.

How to make movement a daily habit

Aim for at least 30 minutes of moderate exercise most days of the week. But remember, exercise doesn’t have to mean hitting the gym. There are lots of ways to move your body while doing what you love:

• Walking: A brisk walk in your neighborhood or through a local park is a great way to get your heart pumping.
• Gardening: Digging, planting, and weeding are all excellent forms of exercise.
• Swimming or water aerobics: These activities are gentle on the joints and a great way to build strength and endurance.
• Dancing: Put on some music and let loose! Dancing is a fun and social way to get your heart rate up.

If you’re new to exercise, it’s important to start slowly and gradually increase your activity level to avoid injury. And remember to always consult your physician before starting a new exercise program, especially if you have any underlying health conditions.

Tip #4: Manage your stress levels

Stress isn’t just a feeling. Chronic stress can weaken your body’s defenses because stress hormones can suppress the immune system.⁵ Think of stress as a constant drain on your body’s resources. When you’re stressed, your body is less able to fight off germs and keep you healthy.

How to keep stress at a minimum

Finding healthy ways to manage stress is crucial for a strong immune system. Here are a few techniques to help you keep stress at bay:

• Practice relaxation techniques such as deep breathing exercises, meditation, or gentle yoga.
• Spend time in nature, whether it’s a walk in the park or simply sitting on your front porch.
• Engage in creative hobbies you enjoy, such as reading, painting, or playing a musical instrument.
• Connect with friends and family—social interaction can be a great stress reliever!
• Listen to calming music.
• Make sure you’re getting enough sleep, as sleep deprivation can make stress worse.

Tip #5: Stay up to date on checkups and vaccinations

Staying proactive about your medical care is one of the best ways to protect your health, especially as a senior. Regular well checks are key to catching potential health issues before they start or worsen. Along with regular checkups, it’s important to stay on top of your vaccine schedule. Vaccinations help protect against serious illnesses by giving your immune system a practice run against specific germs, so your body is ready to fight them off if you’re ever exposed.

Important vaccines for seniors

Staying up to date on your vaccinations is a crucial part of maintaining a strong immune system. Here are some vaccines that are particularly important for seniors:⁶

• Influenza (flu) vaccine: Get this every year to prevent against the seasonal flu.
• Pneumonia vaccine: Protects against pneumococcal pneumonia, a serious lung infection.
• Shingles vaccine: Prevents shingles, a painful rash caused by the chickenpox virus.
• Tetanus, diphtheria, and pertussis (Tdap) vaccine: Protects against these three serious bacterial infections.
• COVID-19 vaccine: Protects against severe illness, hospitalization, and death caused by COVID-19.

It’s important to discuss your individual vaccination needs with your physician. They can assess your health history and recommend the vaccines that are right for you.

Boosting your immune system doesn’t have to be complicated. By focusing on these five key areas—a colorful diet, restful sleep, regular exercise, stress management, and staying up to date on checkups—you can significantly strengthen your body’s defenses. Remember, a strong immune system translates to fewer sick days, more energy to enjoy your favorite activities, and a better overall quality of life.

Even small changes can make a big difference. Start by adding one extra serving of fruit or vegetables to your daily diet or try going to bed just 30 minutes earlier. Taking care of your immune system is an investment in your health and well-being. Start today and enjoy a healthier, happier life!

Current content on this page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before starting any new fitness or dietary plan. References are provided for informational purposes only and do not imply endorsement of any website or other sources. For any health-related questions, contact your healthcare provider.

• Alisa Bowman, “Aging and the immune system: Strengthening your body’s defenses,” Mayo Clinic Press, last accessed March 25, 2025, https://mcpress.mayoclinic.org/healthy-aging/aging-and-the-immune-system.
• “Foods to Boost Your Immune System,” Brown University Health, last accessed March 25, 2025, https://www.brownhealth.org/be-well/foods-boost-your-immune-system.
• Eric J. Olson, MD, “Lack of sleep: Can it make you sick?”, Mayo Clinic, last accessed March 25, 2025, https://www.mayoclinic.org/diseases-conditions/insomnia/expert-answers/lack-of-sleep/faq-20057757.
• Ekaterina Pesheva, “Some Benefits of Exercise Stem from the Immune System,” Harvard Medical School, last accessed March 25, 2025, https://hms.harvard.edu/news/some-benefits-exercise-stem-immune-system.
• “Yes, There Is Such a Thing as Stress Sickness,” Cleveland Clinic, last accessed March 25, 2025, https://health.clevelandclinic.org/what-happens-when-your-immune-system-gets-stressed-out.
• “Vaccines for adults: Which do I need?”, Mayo Clinic, last accessed March 25, 2025, https://www.mayoclinic.org/healthy-lifestyle/adult-health/in-depth/vaccines/art-20046750.