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7 Ways to Boost Your Immune System

It’s important that we do whatever we can to avoid getting sick.

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  • | 12:00 p.m. April 1, 2020
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The best way to deal with any medical condition — even COVID-19, the disease caused by the new strain of coronavirus — is by using prevention. It’s important that we do whatever we can to avoid getting sick, and that includes washing your hands thoroughly, regularly and effectively. Many viruses are transmitted by your own hands.

Strengthen Your System

Here are 7 ways to fight off possible infections by boosting your immune system:

1. Establish (or continue) an exercise routine. Regular exercise has been shown to keep your immune system functioning at top levels. When you’re physically active, you can keep pathogens out of your lungs and airways, minimizing illness. If you have a current routine you’re following, don’t let up on it. If you don’t, it might be a good time to begin.

2. Minimize stress. When you experience stress, it can release the hormone cortisol, boosting inflammation and actually suppressing your immune system, making it less effective. Many studies have shown those reporting the least amount of stress were also the least likely to get infections.

3. Maintain an adequate amount of sleep. This doesn’t only mean getting the right number of hours of shuteye, but also doing what you can do to ensure quality sleep as well. One reason for this: Sleep-deprived patients are more likely to develop an illness after exposure to a virus. Aim for 6-7 hours of quality sleep per night.

4. Drink less alcohol. Limiting alcohol consumption may mean a more restful night, but that’s not all. Studies have shown that excessive alcohol consumption leads to an increase in respiratory infections and impaired immune responses. Consider drinking moderately, up to one drink a day for women or two per day for men, according to the U.S. Dietary Guidelines for Americans. 

5. Vaccinate against other infections. It is possible to get more than one infection simultaneously — and it’s also dangerous. If you contracted the flu on top of COVID-19, for example, it would mean a much more complex medical situation. Vaccines are currently available for protecting against the flu, pneumonia and pertussis (among others).

6. Stop smoking/vaping. As a general rule, anything you put in your lungs unnecessarily is going to lead to a higher likelihood of respiratory infection.

7. Support a healthy immune system. Eating healthy is important. A healthy gut will allow you to fight infections more effectively. Support your immune system by adding foods rich in vitamins A, C and D as well as zinc into your dietary regimen. Consume them often — at least five servings of fruits and vegetables daily. 

Know Your Fruits and Vegetables

Wondering what the differences between a serving of fruit and a serving of vegetables are?

  • A serving of fruit amounts to either a medium-sized piece of fruit (roughly the size of a tennis ball) or a half cup of fresh, frozen or canned fruit that’s packed in either water or 100 percent juice. 
  • A serving of vegetables can be one cup of raw, leafy vegetables; a half cup of fresh, frozen or canned vegetables (look for those with “no added salt” on their label); or a half cup of vegetable juice (such as V8 Vegetable Juice).

Don’t be afraid to get creative with your nutrition. You have options. In fact, there are many ways to get your five recommended daily servings of fruits and vegetables.

From A to Zinc 

Some healthy (and delicious!) suggestions include:

Vitamin A

  • Cantaloupe
  • Carrots 
  • Dairy products 
  • Eggs
  • Fortified cereals
  • Green, leafy vegetables 
  • Pumpkin
  • Red peppers 
  • Sweet potatoes 

Vitamin C

  • Broccoli
  • Brussels sprouts
  • Cantaloupe
  • Citrus fruits
  • Kiwi
  • Peppers
  • Strawberries
  • Tomatoes

Vitamin D

  • Eggs
  • Fish liver oil (such as cod liver oil)
  • Fish (herring, mackerel, salmon, trout, tuna)
  • Fortified products such as cereals, dairy products, orange juice, soy milk 


  • Beans and peas
  • Beef
  • Dairy products
  • Fortified cereals
  • Nuts
  • Poultry
  • Seafood
  • Whole grains 

Learn More

To see more health news and trends, wellness & prevention tips, visit the Orlando Health Content Hub at OrlandoHealth.com/ContentHub.

The Orlando Health Center for Health Improvement at Orlando Health Medical Pavilion – Horizon West also hosts classes, workshops and other programming centered around nutrition, stress management and more. For more information, visit OrlandoHealth.com/CenterforImprovement.


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