Receiving at least one dose of the Covid vaccine could potentially extend lifespan, according to a significant new study.

The study, which analyzed data from over 28 million adults, compared those who had received at least one Covid-19 vaccine dose with those who remained unvaccinated.

This extensive research, believed to be the largest of its category, revealed that adults who received at least one dose of the Pfizer or Moderna vaccines had a 25 percent lower mortality rate from any cause over the following four years compared to their unvaccinated counterparts.

Moreover, vaccinated individuals exhibited nearly a 75 percent reduction in the risk of dying from Covid-related complications while hospitalized.

Unvaccinated individuals faced a risk of dying from Covid that was up to five times higher than those who had received at least one vaccine dose.

The findings come amid a period of contention regarding mRNA Covid vaccines from Pfizer and Moderna, as FDA regulators have called for stricter vaccine guidelines after an internal memo claimed the deaths of at least 10 children were linked to the shots. 

Recent studies have also suggested the shots lead to myocarditis, or swelling of the heart’s muscle, though federal figures suggest this risk is as low as one in 100,000. 

Researchers behind the new study suggested the improved outcomes of vaccinated individuals may be because they are more likely to be of higher socioeconomic status, which opens to door to higher quality preventative healthcare, reducing the risk of premature death or death from chronic diseases.

A new study found people who got at least one dose of the Covid vaccine had a lower risk of death from any cause (stock image)

An illustration photo shows a dose of the Pfizer-BioNTech coronavirus disease (Covid-19) vaccine from Skippack Pharmacy

The study, published earlier this month in the journal JAMA Network Open, looked at 22.7 million vaccinated and 5.9 million unvaccinated French adults between ages 18 and 59, over 40 percent of the country’s population. 

Age was divided into the following subgroups: 18 to 29, 30 to 39, 40 to 49 and 50 to 59. The largest group of participants (29 percent) were between 18 and 29 years old, and 51 percent of all participants were women. 

Participants were considered vaccinated if they had at least once dose of the Covid vaccine between May 1 and October 31, 2021, a period of mass vaccination in France. Unvaccinated participants were those who had not received the shot by November 1, 2021. 

The majority (77 percent) of vaccinated participants had received two doses of the Pfizer or Moderna Covid vaccine by November 1, 2021.

Vaccinated individuals were about one year older on average than unvaccinated adults (38 years old compared to 37 years) and were 17 percent more likely to have a cardiometabolic comorbidity such as high blood pressure, type 2 diabetes, obesity, liver disease or chronic kidney disease.

During an average follow-up time of 45 months, there were 98,429 (0.4 percent) and 32,662 (0.6 percent) deaths in the vaccinated and unvaccinated groups, respectively. 

The main causes of death were cancer, injury or accidental death, or circulatory system diseases such as coronary artery disease, stroke, heart failure or high blood pressure. 

A 2022 study led by academics at Imperial College London suggests almost 20million lives were saved by Covid vaccines in the first year since countries began rolling out the jabs, the majority in wealthy nations

The above graph shows the risk of suffering myocarditis by doses, based on people under 40 years old and up to seven days after getting their vaccine, according to a 2022 study. The CDC emphasizes that the overall risk is extremely low

The researchers found a 25 percent lower risk of all-cause death in people who had been vaccinated against Covid compared to unvaccinated individuals. Additionally, there was a 74 percent lower risk for death due to Covid in those who had received at least one vaccine. 

The contrast in Covid deaths was most stark in the first several months after the study ended in fall 2021. Between six and nine months’ follow-up, the proportion of Covid-related deaths was 10.5 percent in unvaccinated individuals and two percent in those who had gotten at least one dose. 

Additionally, participants who had received at least one dose of the BNT162b2 (Pfizer and BioNTech’s Comirnaty) vaccine were 27 percent less likely to die from any cause, and those who received the first dose of the mRNA-1273 (Moderna’s Spikevax) vaccine had a 12 percent lower risk of death from any cause. 

In addition to the idea that the vaccine itself prevented death, the researchers behind the new study also suspected the lower risk of death in vaccinated individuals could partly be because those who got the shots were more likely to be of a higher socioeconomic status, giving them better access to preventative healthcare. 

The results come amid recent studies that have suggested Covid vaccination raises the risk of potentially deadly conditions such as myocarditis, inflammation of the heart muscle called the myocardium.

A study published last month also found that the risk of heart issues in children from the Covid vaccine was lower than the risk from getting Covid itself.