6 Foods to Boost the Immune System Skip to main content

🔴 Rated Top El Paso Doctor & Specialist by ✔️ RateMD* | Years 2014,2015,2016,2017,2018,2019

Chiropractic Podcast

6 Foods to Boost the Immune System

Do you feel:

  • Feel hungry an hour or two after eating
  • Digestive problems subside with rest
  • Excessive belching, burping or bloating
  • Stomach pain, burning or aching 1-4 hours after eating
  • Sense of fullness during and after meals
If you are experiencing any of the situations, then you might want to try these six types of food to help boost your immune system.

The Immune System

The immune system is the body’s defense mechanism that provides a robust anatomical barrier.  The gastrointestinal tract is one of the barriers. It has many defense mechanisms such as peristalsis, gastric acid, bile acids, digestive enzymes, flushing, thiocyanate, defensins, and gut flora in the body. The gut flora is the critical focus for many health professionals; however, all the essential defense mechanisms rely heavily on the gastrointestinal tract to function efficiently.

There are ways to benefit the immune system as one of the ways is to plan meals that are filled with necessary nutrients that can fight off infections. Prebiotic and probiotic-rich foods help enhance microbial diversity in the gut, while vitamin C-rich foods can mop up the free radicals that have entered the body. Another benefit is to avoid foods that promote infections like heavily processed foods, added sugars, and sodas. When it is not consumed in the body, it can help boost immunity and enrich the gut microbiome. Here are the six foods to help boost the immune system in the body.

Yellow Bell Peppers

Red, yellow, and green bell peppers (capsicum) background

Due to being the most natural vegetable to find at a local grocery store or farmer's markets around the world, yellow bell peppers contain more vitamin C than oranges. Since oranges contain about 78% of vitamin C, yellow bell peppers contain about 152% of vitamin C and numerous vitamins and minerals. Bell peppers (yellow, red, orange and green) contain the following:
  • Vitamin B6: Bell peppers contain pyridoxine, which is an essential nutrient for the formation of red blood cells.
  • Vitamin K1: This vitamin is also known as phylloquinone, which is vital for bone health and blood clotting.
  • Potassium: This mineral is essential for improving heart health.
  • Folate: Also known as vitamin B9, this vitamin has a variety of functions to the body and is highly essential to take during pregnancy.
  • Vitamin E: This is a powerful antioxidant that is essential for healthy nerves and muscles.
  • Vitamin A: Red bell peppers are high in beta carotene when consumed converts to vitamin A in the body.
Vitamin C helps boost the immune system by influencing the development and function of lymphocytes, and with about half a cup of yellow bell peppers will give the body those lymphocytes.


Guava is a traditional remedy for a range of health conditions that a person may encounter. These tropical fruits are seasonal throughout the winter. They contain about 140% of vitamin C and rich with lycopene, which is excellent for the immune system as it plays an essential role in the activities of the enzymes. Lycopene is a powerful antioxidant that has been implicated in having a potentially beneficial impact on several chronic diseases, including cancer.


Studies have been shown that the guava fruit and the leaves have been known to have a positive effect on a range of illnesses and symptoms, including:
  • Type 2 diabetes
  • Menstrual cramps
  • Diarrhea
  • Flu
  • Blood pressure
  • Osteoarthritis
  • Cancer



Broccoli is high in phytonutrients like vitamins A, C, and E while also containing sulforaphane. Sulforaphane is activated when broccoli or any cruciferous vegetables are chewed, cut, or damaged. Raw broccoli or broccoli sprouts contain the highest level of sulforaphane when it is not boiled or cooked. Studies have been shown that consuming broccoli has been associated with reducing many lifestyle-related health conditions like:
  • Obesity
  • Diabetes
  • Improves digestion
  • Regulate the immune system
  • Helps support healthy-looking skin
  • Decrease inflammation
  • Lowers blood pressure


Turmeric is an excellent immune-boosting food since it supports healthy inflammatory pathways in the body. Inflammation in the body is implicated in the pathophysiology of many health-compromising situations that can lead to chronic illnesses. So consuming pro healthy inflammation foods like turmeric or incorporating turmeric in dishes is an ideal way to boost the immune system.


The active component in turmeric is curcumin and has potent biological properties like anti-oxidative, anti-cytotoxic, and neurorestorative properties, making it an essential staple in an immune-boosting food. Here are some of the benefits that turmeric provides to the body:
  • Anti-inflammatory properties
  • Pain relief on the joints
  • Improves liver function
  • Reducing the risk of cancer
  • Preventing gut inflammation

Green Tea


Green tea helps the body relax and contains L-theanine that helps the formation of healthy T-cells. Green tea also contains EGCG (epigallocatechin gallate) and is packed filled with flavonoids to help boost the body's immune system. Here are some of the health benefits that green tea provides:
  • Cancer prevention
  • Lowers the risk of cardiovascular diseases
  • Lowers cholesterol
  • Decrease the risk of a stroke
  • Lowers the risk of type 2 diabetes
  • Help lose weight
  • Helps lowers inflammation on the skin
  • Improves brain function
  • Helps reduce the risk of Alzheimer’s disease



Almonds are packed filled with vitamins, minerals, protein, and fibers. It contains vitamin E and helps boost the immune system since it is a free radical scavenging antioxidant. They are easy to find in any grocery store, and the health benefits that almonds can provide are:
  • Lowering cholesterol
  • Reduce the risk of cancer
  • Provide heart health benefits
  • Reduce type 2 diabetes
  • Manage weight


Eating these six foods can be beneficial to support a healthy immune system. They are bursting with plant-based nutrition that the body needs to make sure that chronic illnesses like inflammation in the gut. Some products help support the immune system as well as making sure that the gastrointestinal system and the sugar metabolism is supported. Eating a variety of foods that has antioxidants and anti-inflammatory properties is beneficial to the body. With the cold and flu season approaching, it is highly relevant to consume these foods to help fight against the cold and flu and providing assistance to the immune system.

October is Chiropractic Health Month. To learn more about it, check out Governor Abbott’s declaration on our website to get full details on this historic moment.

The scope of our information is limited to chiropractic, musculoskeletal and nervous health issues as well as functional medicine articles, topics, and discussions. We use functional health protocols to treat injuries or chronic disorders of the musculoskeletal system. To further discuss the subject matter above, please feel free to ask Dr. Alex Jimenez or contact us at 915-850-0900 .


Ahmed, Touqeer, et al. “Curcuminoids Rescue Long-Term Potentiation Impaired by Amyloid Peptide in Rat Hippocampal Slices. - Semantic Scholar.” Undefined, 1 Jan. 1970, www.semanticscholar.org/paper/Curcuminoids-rescue-long-term-potentiation-impaired-Ahmed-Gilani/c66297f8d0f3b633fac263cbb81f82de1893387a.

Arnarson, Atli. “Bell Peppers 101: Nutrition Facts and Health Benefits.” Healthline, 27 Mar. 2019, www.healthline.com/nutrition/foods/bell-peppers.

Burgess, Lana. “Health Benefits of Guava: How to Use It, Nutrition, and Risks.” Medical News Today, MediLexicon International, 20 Mar. 2019, www.medicalnewstoday.com/articles/324758.php.

Du, Guang-Jian, et al. “Epigallocatechin Gallate (EGCG) Is the Most Effective Cancer Chemopreventive Polyphenol in Green Tea.” Nutrients, MDPI, 8 Nov. 2012, www.ncbi.nlm.nih.gov/pmc/articles/PMC3509513/.

Kim, DS, et al. "Curcuminoids from Curcuma Longa L. (Zingiberaceae) That Protect PC12 Rat Pheochromocytoma and Normal Human Umbilical Vein Endothelial Cells from BetaA(1-42) Insult.” Neuroscience Letters, U.S. National Library of Medicine, 27 Apr. 2001, www.ncbi.nlm.nih.gov/pubmed/11297823.

Luo, Cong, and Xian-Guo Wu. “Lycopene Enhances Antioxidant Enzyme Activities and Immunity Function in N-Methyl-N'-Nitro-N-Nitrosoguanidine-Enduced Gastric Cancer Rats.” International Journal of Molecular Sciences, Molecular Diversity Preservation International (MDPI), 2011, www.ncbi.nlm.nih.gov/pmc/articles/PMC3116194/.

Menon, Venugopal P, and Adluri Ram Sudheer. “Antioxidant and Anti-Inflammatory Properties of Curcumin.” Advances in Experimental Medicine and Biology, U.S. National Library of Medicine, 2007, www.ncbi.nlm.nih.gov/pubmed/17569207.

Nordqvist, Joseph. “Almonds: Health Benefits, Nutrition, and Risks.” Medical News Today, MediLexicon International, 14 Dec. 2017, www.medicalnewstoday.com/articles/269468.php.

Team, Biotics Education. “Key Foods to Boost the Immune System.” Biotics Research Blog, 15 Oct. 2019, blog.bioticsresearch.com/key-foods-to-boost-the-immune-system.

van Gorkom, Gwendolyn N Y, et al. “Influence of Vitamin C on Lymphocytes: An Overview.” Antioxidants (Basel, Switzerland), MDPI, 10 Mar. 2018, www.ncbi.nlm.nih.gov/pubmed/29534432.

Vermeulen, Martijn, et al. “Bioavailability and Kinetics of Sulforaphane in Humans after Consumption of Cooked versus Raw Broccoli.” Journal of Agricultural and Food Chemistry, U.S. National Library of Medicine, 26 Nov. 2008, www.ncbi.nlm.nih.gov/pubmed/18950181.

Ware, Megan. “Broccoli: Health Benefits, Nutritional Information.” Medical News Today, MediLexicon International, 8 Dec. 2017, www.medicalnewstoday.com/articles/266765.php.

Ware, Megan. “Green Tea: Health Benefits, Side Effects, and Research.” Medical News Today, MediLexicon International, 28 Mar. 2017, www.medicalnewstoday.com/articles/269538.php.

Ware, Megan. “Turmeric: Benefits and Nutrition.” Medical News Today, MediLexicon International, 24 May 2018, www.medicalnewstoday.com/articles/306981.php.

Testimonies & Case Studies

Today's Chiropractic

Trending: Back Pain Insights

Location Near You


Legal Disclaimers & Scope Of Practice

General Disclaimer

The information herein is not intended to replace a one-on-one relationship with a qualified health care professional, licensed physician, and is not medical advice. We encourage you to make your own health care decisions based on your research and partnership with a qualified health care professional. Our information scope is limited to chiropractic, musculoskeletal, physical medicines, wellness, sensitive health issues, functional medicine articles, topics, and discussions. We provide and present clinical collaboration with specialists from a wide array of disciplines. Each specialist is governed by their professional scope of practice and their jurisdiction of licensure. We use functional health & wellness protocols to treat and support care for the injuries or disorders of the musculoskeletal system. Our videos, posts, topics, subjects, and insights cover clinical matters, issues, and topics that relate to and support, directly or indirectly, our clinical scope of practice.* Our office has made a reasonable attempt to provide supportive citations and has identified the relevant research study or studies supporting our posts. We provide copies of supporting research studies available to regulatory boards and the public upon request. We understand that we cover matters that require an additional explanation of how it may assist in a particular care plan or treatment protocol; therefore, to further discuss the subject matter above, please feel free to contact us. Dr. Alex Jimenez DC, MSACP, CCST, IFMCP*, CIFM*, ATN* email: coach@elpasofunctionalmedicine.com phone: 915-850-0900 Licensed in: Texas & New Mexico*