(WKBN) – Doctors at the Cleveland Clinic say it’s important to build your immune system up for the winter months. But how can you do that?

Now is a common time for people to fall sick to colds or other illnesses. It means at home you’ll want to take extra precautions, said Julia Zumpano, a registered dietitian with the Cleveland Clinic.

One way to do this is through what you eat.

Zumpano recommends including lots of fruits and vegetables in your diet. She said you should be getting enough vitamin C, zinc and iron naturally through these foods rather than from supplements.

Zumpano said there are ways to pack in the nutrients but also have something delicious. One simple way is through smoothies.

“You can pack in spinach and berries and Greek yogurt, and really any fruits or vegetables can be packed in there — a variety. You can get some chia seeds or flax seeds for some omega-3, so smoothies are a great way to go, especially if you’re on the go,” Zumpano said.

If you do want to take supplements, Zumpano says to talk to your doctor first.

“Immunity is important all year round, but specifically this time of year. Kids are going back to school, we have a lot of germs coming in and out of the house. So to keep your family as healthy as possible, we gotta really stay on our hygiene and our immunity,” said Zumpano.

She recommends getting those essential nutrients from food over supplements, and if you must take supplements, consult with your doctor first.

Zumpano also said building up your immune system does not happen overnight. It takes time.

For best results, make sure you eat healthy foods like these every day.