You can get these nutrients from fruits and vegetables and fortified foods like cereals and dairy products. In addition, it’s important to limit processed foods and saturated fats, which can weaken the immune system. Eating a healthy diet can help ensure that your body has the tools it needs to fight off infection.
Quit Smoking

When it comes to boosting your immune system, there are many things you can do. Of course, eating a healthy diet, getting enough exercise, and getting enough sleep are all important. But one of the most important things you can do is to quit smoking. Smoking not only harms your lungs, but it also weakens your immune system.
Smokers are more likely to get sick and take longer to recover from illness than nonsmokers. If you’re a smoker, quitting is one of the best things you can do for your health. Talk to your doctor about ways to quit smoking and make a plan to kick the habit for good.
Hydrate More

Hydration is key to a functioning immune system. Fighting germs and infections takes a lot of energy, and when we are dehydrated, our cells don’t have enough power to do their job correctly. So aim to drink eight glasses of water a day or more.
You can also increase your intake by eating foods high in water, like fruits and vegetables. In addition to boosting your immunity, staying hydrated will give you more energy, help your skin look its best, and promote a healthy digestive system.