A new study warns heart attacks that occur in the morning are more severe than experiencing a cardiac arrest at night. Researchers at the University of Geneva in Switzerland wanted to investigate how bad various health issues like heart attacks and allergies are at different times of the day.
Previous research has found adaptive immune responses are under circadian control. This is when pathogen-fighting cells develop over time."This is 'striking' and should have relevance for clinical applications, from transplants to vaccinations," study senior author Christoph Scheiermann, Professor at the University of Geneva in Switzerland, told a news portal.
The team examined data on previous studies that investigated the association between rhythms and immune responses. These studies were primarily conducted on mice. The team also stated that white blood cells oscillate in a circadian way as well. The research included studies that compared immune cell time-of-day rhythms under normal conditions, as well as inflammation and disease.
"Investigating circadian rhythms in innate and adaptive immunity is a great tool to generally understand the physiological interplay and time-dependent succession of events in generating immune responses," Scheiermann told a news portal. Adding, "The challenge lies in how to channel our growing mechanistic understanding of circadian immunology into time-tailored therapies for human patients."This discovery could potentially lead to making the immune response more effective by using the circadian clock. The study's findings were originally published in the journal Trends in Immunology.
Meanwhile, one study found experiencing bullying at work can increase the risk of a heart attack. "If there is a causal link between bullying or violence at work and cardiovascular disease, then the removal of workplace bullying would mean we could avoid five per cent of all cardiovascular cases, and the eradication of violence at work would avoid more than three per cent of all cases," Tianwei Xu, a PhD student at the University of Copenhagen in Denmark, told a news portal.
However, certain lifestyle changes can significantly reduce the risk of experiencing a heart attack. A study published in the European Heart Journal revealed high fitness levels can reduce the risk of a heart attack. "We found a strong link between higher fitness levels and a lower risk of heart attack and angina pectoris over the nine years following the measurements that were taken," author of the study Bjarne Nes told a news portal. Adding, "Even among people who seem to be healthy, the top 25 per cent of the fit individuals actually have only half as high a risk as the least fit 25 per cent."