A leading Welsh respiratory consultant is urging smokers to #QuitforCovid now or risk suffering more serious complications if they develop Covid-19.
Keir Lewis, Professor of Respiratory Medicine at Swansea University, warns that smokers could be at greater risk of going on to develop the Covid-19 lung illness from the coronavirus. This is because they already have weakened lung defences as a result of their smoking damaging the cells protecting their nose and upper and lower airways.

Meanwhile many smokers will also have existing lung conditions which scientists know from other countries makes them much more vulnerable to the effects of the virus.
Research published in the New England Journal of Medicine examining disease characteristics among Chinese patients found that smokers are approximately 1.5 times as likely to progress to the severe stage of COVID-19 as those who have never smoked. Professor Lewis, said:
“There are two aspects of this which are important. Smokers have got weakened defences and they are more likely to have other lung conditions as well which affect mortality. It looks like if you have a respiratory condition then you are more likely to develop viral pneumonia from Covid-19.
“However, because of the effects of smoking on the immune responses and your body’s natural defences it’s likely that smokers are going to be more at risk independently of whether they have other lung or other medical conditions.”
“Every cigarette you smoke damages your respiratory innate lung defences and your cough reflexes,” he added.
According to Professor Lewis. Lung defences heal quite quickly so giving up smoking even now could significantly improve smokers’ ability to defend from the infection and also recover from the condition by strengthening their body’s immune system. Improvements in lung defences occur within days of giving up.
“If you want to boost your lung immune system and your lung defences, you must stop harming them with cigarettes. Quitting smoking will help the body’s defences to grow back quicker and faster.
“Your mucociliary escalator – the self-clearing mechanism of the body’s airways – starts working better within two to three days after stopping smoking which is why people’s cough gets worse a couple of days after quitting but then improves after a few weeks. All the muck that has built up starts to get cleared. Then the totalmucus in their lungs improves. Their blood white cell count and other natural immune cells that patrol the lung system, are also boosted through stopping smoking.”
He went on to say that by quitting, those who contract Covid-19 illness are less likely to pass on the condition to others: “If they cough less after stopping smoking with their asthma or COPD they are less likely to pass it on to those around them. Now is a good trigger to stop smoking.”
Currently in Wales 17% of the adult population smoke with prevalence highest
in the most deprived areas of the country. Smoking is the leading cause of premature death and ill health in the country.
Suzanne Cass, CEO of ASH Wales, said: “We know that last year 45% of smokers in Wales tried to quit and 68% of current smokers in Wales would like to give up.
“Smoking is not a lifestyle choice, it is an addiction that leads to devastating health consequences, which is why we would always advise smokers to quit.
“However, in light of concerns about the spread of Covid-19 we would urge smokers more than ever to consider giving up a habit that seriously affects the body’s natural defences.”

The move has been prompted by ASH Wales’ figures showing that 15% of all tobacco sold in Wales is illegal – among the highest proportion in the UK – with social media platforms proving a lucrative way to sell illegal cigarettes, and increasingly high-tech concealment devices being used to hide the goods. Currently in Wales 17% of the adult population smoke.
To support the programme ASH Wales will be holding an illegal tobacco roadshow in Wrexham town centre on No Smoking Day (March 11th) with Trading Standards Officers and sniffer dog teams on hand to gather intelligence and give demonstrations.
Roger Mapleson is Trading Standards and Licensing Lead at Wrexham County Borough Council. He said one of his team’s biggest concerns is the availability of cheap illegal tobacco to young people, with smoking rates among 15 to 16-year-olds currently at 9% in Wales: “I doubt there is a school in Wales that hasn’t got a supply of illegal tobacco close to it,” he said.








This No Smoking Day, we will be shining a spotlight on Wales’ illegal tobacco trade, meeting those tackling it on the front line and hearing about its impact on our communities at an event in Wrexham’s Queen’s Square. 