Tuesday 09th Feb 2021 |

With news of the vaccination rollout gaining momentum, and as we each wait our turn to receive it, now is the perfect time to consider how we can really make our vaccination count.

By bringing our healthiest selves to receive the COVID-19 vaccine, the Institute for Optimum Nutrition (ION) believes that this can only be of benefit to us in the long term.

New research from Ohio State University[1] has found that stress, depression and poor health behaviours can all affect the body’s immune response to vaccination. This includes how well we develop antibodies after receiving a vaccine, how quickly antibodies deplete after vaccination and the intensity of a vaccine’s side effects.

By managing stress, getting enough sleep and improving our diets in the lead up to our vaccination, this can influence how our bodies respond to it. In the longer term, by supporting our immune health this will also help to build up our resilience against future infection.

“Now is not the time to get complacent,” says Jackie Lynch, Chair of the Trustees at the Institute for Optimum Nutrition. “Not only can we give ourselves the best possible chance of the vaccine being effective if we improve our health in the short term, but we can protect ourselves from future infections as well as chronic diseases in years to come.”

Top tips from Jackie Lynch for supporting your immune health

Before your COVID-19 vaccine – Limit ultra-processed food  

Poor nutrition has been found to increase the risk of infection and can lead to compromised immunity, so limit sugary, processed snacks and reduce your reliance on ready meals. Selected nutrients play a fundamental role in how well our immune system works. It is much easier to fit these nutrients into meals if you’re not filling up with empty calories (i.e. foods that are low in nutrients) every few hours.

Before your COVID-19 vaccine – Eat a rainbow 

COVID-19 vaccine

For a well-functioning immune system, micronutrients should include vitamins A, C, D, E, B2, B6 and B12 as well as folic acid, iron, selenium and zinc. Replenish these by eating the rainbow over the course of the week. This also feeds helpful bacteria in the gut, which play a fundamental part in regulating a healthy immune response and ensuring the body can recognise invaders.

Before your COVID-19 vaccine – Vitamin C 

COVID-19 vaccine

Infections significantly deplete the body’s vitamin C stores. Sugar also competes with vitamin C for uptake into cells,so instead of an afternoon snack consisting of a sweet treat, go for citrus fruit or other vitamin C-rich foods such as berries, kiwi, mango and sweet peppers in addition to eating your greens at meal times. You will instantly add more immune-supporting vitamins, minerals and antioxidants into your diet while cutting out the foods that can leave you feeling lethargic an hour later.  

Studies have also indicated that oral vitamin C (2-8g/day) may reduce the incidence and duration of respiratory infections.[2]  However, ION always recommends talking to a registered nutritional therapist or a GP before supplementing.

Before your COVID-19 vaccine – Vitamin D  

COVID-19 vaccine

Vitamin D deficiency is most likely to be a problem during winter months, since we absorb most of what we need through the skin over summer. It is thought that vitamin D deficiency may be associated with sub-optimal immune function and an increased risk of infection, with studies now linking vitamin D deficiency to the severity of COVID-19. 

Good food sources include oily fish such as mackerel, sardines and salmon, as well as egg yolks. Vegetarians and vegans can get vitamin D through some mushrooms and some fortified foods such as plant milks or nutritional yeast. 

The NHS also recommends everyone to supplement with 10 micrograms of vitamin D every day throughout the winter months. However, studies point towards upwards of 100 micrograms being most optimal for human health.

Before your COVID-19 vaccine – Reduce stress  

COVID-19 vaccine

Chronically raised levels of the stress hormone cortisol can result in the immune system becoming resistant to the stress response.Swollen glands, a sore throat and aching limbs can all be signs that the body is working hard to cope – and a good indicator to take time to relax. Meditation, yoga, walking, running and lifting weights can all help you to do this. The important thing is finding what works for you and your body.

Before your COVID-19 vaccine – Prioritise sleep 

COVID-19 vaccine

Studies have shown that sufficient sleep helps the immune system to work well, with chronic sleep deprivation an independent risk factor for impaired immunity.  Eating meals earlier, avoiding technology close to bedtime and winding down with a bath or listening to some music before bed can all help you to get a better night’s sleep.

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