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A new study published in the Canadian Journal of Cardiology has established a nexus between prolonged cellphone usage and elevated cardiovascular disease risks. The research, based on data from nearly half a million participants, found that individuals who spend more time making calls each week were more likely to experience cardiovascular events such as stroke or heart failure.
The study examined the relationship between cellphone usage and cardiovascular health in a large group of participants from the UK Biobank. Researchers analysed self-reported phone usage data and tracked participants’ health outcomes over an average of 12.3 years.
After controlling for various factors, the study found that regular cellphone users, defined as those who make or receive at least one call per week, had a slightly increased risk of cardiovascular disease compared to non-regular users. However, the risk increased significantly as the duration of phone calls grew. Individuals who spent more than 6 hours on the phone each week had a 21% higher risk of cardiovascular events.
The study identified several factors that may contribute to this association, including psychological distress, poor sleep quality, and neuroticism. The researchers suggest that these factors can negatively impact cardiovascular health through disrupted circadian rhythms, endocrine and metabolic disruptions, and increased inflammation.
While the study provides evidence of a correlation between cellphone usage and cardiovascular risk, it cannot definitively prove causation. Other factors, such as lifestyle habits and underlying health conditions, may also play a role.
Medical experts caution that while the findings of this study are concerning, more research is needed to fully understand the relationship between cellphone usage and cardiovascular health. They emphasise the importance of maintaining a healthy lifestyle, including regular exercise, a balanced diet, and adequate sleep, to reduce cardiovascular risk.
Cheng-Han Chen, MD, a board-certified interventional cardiologist and medical director of the Structural Heart Program at MemorialCare Saddleback Medical Center in Laguna Hills, California, offers his insights on the study’s findings. He said, “While the study cannot definitively prove causation due to its observational nature, it suggests that some of the increased risk might be linked to phone usage’s impact on mental health and sleep”.
Chen, who was not involved in the research explained that, “Additionally, there may be other factors, or confounders, influencing the results.
One such confounder identified in the study was the higher prevalence of mobile phone usage among smokers and individuals with diabetes. He said that the increased risk of cardiovascular disease reported could potentially be attributed to these underlying health conditions rather than solely to mobile phone usage.
On his own part, Rigved Tadwalkar, a board-certified consultative cardiologist at Providence Saint John’s Health Center in Santa Monica, California, also emphasized the connection between excessive phone use and sleep disturbances. “Prolonged phone use can disrupt the body’s natural circadian rhythm, leading to stress on the heart and blood vessels,” he explained.
Tadwalkar highlighted the potential for increased stress and anxiety levels associated with excessive phone use, which can contribute to elevated blood pressure and inflammation both risk factors for cardiovascular disease.
Chen cautioned against considering mobile phone use as a risk factor for cardiovascular disease until further research confirms the relationship. “Unless these results are substantiated by future studies, I would not consider mobile phone use to be a risk factor,” he stated.
Corroborating, Tadwalkar advocated for a balanced perspective on the study’s findings. “While the results should be taken seriously, it’s important to consider other factors that might be influencing the relationship,” he advised.
Tadwalkar emphasized the importance of mindful technology use. “The study highlights the interconnectedness of modern technology and heart health, urging both clinicians and patients to be conscious of their daily habits and their potential impact on long-term cardiovascular outcomes.”
To reduce cardiovascular risk, Dr. Chen recommended a healthy lifestyle that includes a balanced diet, regular physical activity, adequate sleep, weight management, avoidance of tobacco and alcohol, and stress reduction.
“While the study provides evidence suggesting a potential link between cellphone usage and cardiovascular risk, it is important to interpret the findings with caution. Individuals should maintain a healthy lifestyle and consider limiting excessive phone use, particularly if they have existing cardiovascular concerns”, the experts recommended.
