As Christmas approaches, a familiar and frustrating scenario is unfolding for millions: after pushing through weeks of work stress, they finally stop for the holidays only to be struck down by illness. Health experts warn this festive nightmare is a recognised phenomenon, exacerbated by record levels of winter viruses currently circulating.
The 'Leisure Sickness' Phenomenon Explained
This pattern of falling ill the moment you relax is not merely bad luck. Dr Simon Feldhaus, a preventive medicine specialist at the Balance Clinic, identifies it as 'leisure sickness'. He explains that many people operate for extended periods under chronic stress, which can suppress early symptoms of illness. "When work stops and the nervous system finally down-regulates, the body has the opportunity to express what it has been holding back," Dr Feldhaus said.
Compounding this is the festive period itself. Holidays often combine travel, disrupted sleep, dietary changes, alcohol consumption, and increased social contact. This perfect storm can overwhelm an immune system already weakened by prolonged stress, creating ideal conditions for infection.
The warning is timely, as flu cases have soared to record levels for this time of year. NHS data reveals that more than 3,100 hospital beds were occupied by flu patients each day last week alone. Health officials advise anyone with flu symptoms—such as a sudden high temperature, extreme tiredness, or body aches—to stay at home or wear a face mask if they must go out.
How to Strengthen Your Defences Before Christmas
Experts emphasise that supporting your immune system in the weeks leading up to the break is crucial. Dr Feldhaus notes that while people focus on avoiding germs, the more critical factor is immune resilience. "Around 70–80 per cent of the immune system is located in the gut," he stated. "If the gut barrier and microbiome are compromised, immune defence is weakened at the first line."
His advice centres on protecting gut health, correcting micronutrient deficiencies, and minimising lifestyle stressors. He recommends specific supplements to bolster defences, including:
- Vitamin D
- Vitamin C
- Zinc (noting a short course at illness onset may help, but long-term daily use can cause stomach upset)
- Omega-3 fatty acids
- Selenium
Furthermore, it is not too late to get a flu vaccine. England's free programme is available for over-65s, clinical risk groups, pregnant women, and frontline workers. Others can access it privately for around £20. Dr Baumgardt, a GP and University of Bristol lecturer, urged: "There are still some flu vaccines available... It is worth asking at your GP or pharmacy if you are eligible."
Practical Steps for the Festive Period
Face masks have returned in some hospitals, and while not universally mandated, they can be a sensible precaution. Professor Laurence Young, a virologist at Warwick University, advised: "If you have any symptoms, even a sniffle, you should consider wearing a mask... Even if you do not have symptoms you should still wear one if you are in contact with the elderly or immunocompromised."
Finally, some traditional remedies have scientific merit. Research suggests chicken soup made with vegetables and herbs can offer modest benefits for respiratory infections, aiding recovery through hydration, warmth, nutrition, and potential anti-inflammatory effects.
By understanding the causes of 'leisure sickness' and taking proactive steps now, you can significantly improve your chances of enjoying a healthy, illness-free Christmas.
