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Nutrition and you

Boost Your Immunity With Antioxidants

Immunity refers to our body’s ability to prevent and fight off infection. The immune system – the system responsible for our body’s immunity – is complex and involves many tissues and organs, including skin, white blood cells, bone marrow and lymph, just to name a few.1
boost immunity

Key Nutrients To Help Support Healthy Immunity 

Good nutrition is essential for supporting a strong immune system in several ways – the following nutrients are key: 

  • Protein  - for the building of antibodies and immune system cells.
  • Vitamin A - helps regulate the immune system and protect the body against infections by keeping skin and tissues in the mouth, stomach, intestines and respiratory system healthy.
  • Vitamin C - helps the body build healthy skin and connective tissue, which helps to block the entry of foreign microbes. 
  • Vitamin E – a powerful antioxidant, protecting cell membranes from damage due to free radicals.   Healthy cell membranes help keep foreign microbes out.
  • Vitamin D  - helps to activate immune cells and properly regulate their function.  
  • Zinc – necessary for wound healing and for cellular reproduction, which is important in the synthesis of new immune system cells.
  • Antioxidants – such as vitamin C, vitamin E, and selenium – help prevent oxidative damage to cells during the immune response to invading pathogens and during infection
  • Other nutrients, including vitamin B6, folate, selenium, iron, as well as prebiotics, probiotics,  may also promote proper immune responses.

How Ensure Can Help

  • Ensure is a scientifically designed, oral nutrition supplement , for adults that has been available for more than 45 years and studied in over 5,500 individuals in 30+ clinical studies.
  • Ensure products are a source of complete, balanced nutrition with essential macronutrients and micronutrients to support overall health. They can be consumed as a health shake, or used as an ingredient to fortify many of your favourite recipes.
  • Ensure serves as a source of supplemental nutrition in times when people cannot consume enough nutrition from food, or for those who simply want to boost their immunity or to aid in recovery from illness.
  • Ensure products are a source of key nutrients, such as protein, vitamin A, zinc, antioxidants, that play important roles in immune health.
  • Antioxidants are essential for immune function. 

There are simple lifestyle choices we can make to help keep our immunity at its best. A nutritious, balanced diet, regular exercise, and generally all the things that improve our gut health and heart health.

The relationship between nutrition, infection and immunity is well known. One component of a nutritious diet that is particularly important to a strong immune system is antioxidants.2 Antioxidants are our body’s first line of defense against free radicals – unstable molecules that can damage body cells.2

Common antioxidants found in the diet include vitamin E, vitamin C, selenium, copper, iron and zinc. Each of these antioxidants improve different immune functions and so have an important role in improving our defense against disease.2



What our latest commercial to see how and why you should Shake It Up with Ensure!


    1. Health Direct. Immune System. Available at: Accessed on 2 October 2018.
    2. Puertollano MA. Curr Top Med Chem 2011;11(14):1752-66.
    3. Abbott Australasia. Ensure Product Information. Data on file.
    4. Bresnahan KA et al. Undernutrition, the Acute Phase Response to Infection, Its Effects on Micronutrient Status. Adv Nutr 2014(5):702-711.
    5. Maggini S et al.  Vitamins C, D, and zinc: synergistic roles in immune function and infections.  Vitam Miner 2017;6:3.
    6. The Academy of Nutrition and Dietetics.  Protect Your Health Through Immune Boosting Nutrition.
    8. Walsh NP.  Nutrition and athlete immune health: new perspectives on an old paradigm.  Sports Med 2019;49(Suppl 2):S153-S168.
    9. Beattie AH, et al. A randomised controlled trial evaluating the use of enteral nutritional supplements postoperatively in malnourished surgical patients. Gut 2000;46:813-818.
    10. Buettner GR. The pecking order of free radicals and antioxidants: lipid peroxidation, alpha-tocopherol, and ascorbate. Arch Biochem Biophys 1993; 300(2):535-543. Grimble RF. Nutritional modulation of immune function. Proc Nutr Soc 2001;60:289-297.
    11. Institute of Medicine. Dietary Reference Intakes for Vitamin C, Vitamin E, Selenium, and Carotenoids. Washington, DC, National Academy Press;2000. Maggini S, et al. Selected vitamins and trace minerals support immune function by strengthening epithelial barriers and cellular and humoral immune responses. Br J Nutr 2007; 98(Suppl 1):S29-S35. Meydani SN, et al. Vitamin E and respiratory tract infections in elderly nursing home residents. JAMA 2004;292:828-836. Roebothan BV and Chandra RK. Relationship between nutritional status and immune function of elderly people. Age and Ageing 1994;23:49-53.