One of the most controversial topics doctors discuss is whether or not you should be getting your flu shot every year.

Some doctors strictly recommend it while implying the risks you may face if you don't.

However, other doctors believe you don't need a vaccine, and that there are plenty of natural ways you can boost your immune system without infiltrating your body with foreign antibodies.

There is a chance you can get the flu during anytime of the year, but peak season is between October and February. If you've ever experienced the flu before, you know how miserable the symptoms are. You may experience a headache, body chills, aches and cramps, fever, sore throat and runny nose.

This year, many of you might have been wondering if you should get the flu shot, especially since the Centers for Disease Control and Prevention (CDC) recently stated that the flu vaccines are ineffective against dominate flu strain. This may leave you (vaccinated or not) concerned about what you can do to prevent getting sick.

The CDC's director, Dr. Tom Frieden, also stated that it's too late to produce a new flu vaccine, since the production of the vaccine could take approximately four months.

While even the healthiest of people can fall victim to the common cold and flu, there are simple ways you can strengthen your body's immune system to defend against invaders and fight back.

What are the three ways to stay healthy during the flu season without having to get a flu shot?

• Increase your vitamin D intake
• Increase your vitamin C intake
• Avoid eating refined sugar, which weakens your immune system

What else do you need to know about how to stay healthy during flu season?

Sarah Corey, AADP, discusses natural and cost-effective tips for staying healthy this season... no shots required.