Childhood Diseases Not Linked to Increased Risk of Death in Later Life

Exposure to infections in early life does not have long-lasting consequences for later-life survival and reproduction, according to a new biological study by the University of Stirling.

In the UK 150 years ago, a 20-year-old could be expected to live to age 60; nowadays, a 20-year-old is expected to live to over 80. Why has adult lifespan increased so much during the last 150 years?

Risk of Mortality for Nondrinkers
Research from The University of Colorado seems to say that those who do not drink at all carry a higher mortality risk as compared to light drinkers.

‘Early-life disease exposure was not linked to increased risk of death in later life. Improvement in healthcare and diet has contributed to increasing adult lifespan.’

Tweet it Now

Previous research suggested that diseases which used to be common in childhood, such as smallpox, measles, and whooping cough caused long-lasting inflammation, which then increased the risk of cardiovascular disease in adulthood and resulted in an early death.

Experts thought that since the introduction of vaccines and eradication of these diseases, children rarely get these illnesses anymore and do not experience long-lasting inflammation, and as a result, are living longer.

However, if this were the case, we would expect infections in childhood to be linked to early death from heart disease, stroke and cancer.

45% Increase in Mortality from Law Enforcement Between 1999 and 2013
Between 1999 and 2013 in the United States, between 279 (in 2000) to 507 (in 2012) people were killed each year by legal intervention or law enforcement.

Now evolutionary ecologists at the University of Stirling and University of Turku, Finland, found no support for the idea that exposure to infections in early life could result in higher mortality risk during adulthood.

Lead researcher, Adam Hayward, Impact Research Fellow at the University of Stirling, said, "Our analyses are significant because they show that early-life disease exposure was not linked to increased risk of death in later life. It was also not linked to risk of death specifically from heart disease, stroke, and cancer and was not related to age at first birth, number of children born, or child survival rate in either men or women.”

Opioid Use Ups Mortality Risk in Elderly With Lung Disease
There are not only increased risks for respiratory-related death associated with new opioid use, but also increased risk of visits to emergency rooms.

"Overall, we found no support for the idea that exposure to infections in early life can have long-lasting consequences for later-life survival and reproduction. Instead, it appears more likely that improved conditions during adulthood, such as healthcare and diet, are responsible for recent increases in adult lifespan."

Researchers used data from church records of births, marriages, and deaths collected in seven parishes in Finland. The 7,283 men and women studied were born between 1751 and 1850, a period before the introduction of effective medicine and contraception.

Chief Minister Launches Mobile App for Monitoring Infant Mortality Rate in Uttar Pradesh
mSehat app will strengthen mother and child tracking system (MCTS) and reproductive and child health through mobile phone-based work plans.

Each person was scored on their likely exposure to disease in early life based on child deaths from infections that occurred during their childhood. If a child was born at a time when a high proportion of children died of infectious diseases, it was assumed that they had higher exposure to disease. Researchers analyzed how an individual's early disease exposure was linked to their survival, deaths from cardiovascular disease, and their fertility.

Source-Eurekalert