Keeping a healthy heart may have as much to do with the quality of health care you have available as it does you avoiding risk factors such as smoking, bad diet and little exercise.
A large international study led by researchers at the Population Health Research Institute at McMaster University and Hamilton Health Sciences has found that low-income countries which have people with the lowest risk factors for cardiovascular problems have the highest rates of cardiovascular events and death, while the high-income countries of people with the highest risk factors for heart conditions have a lower rate of severe heart problems and deaths.
"There is a real paradox. We have found that richer countries with higher risk factors have less heart disease and once people have a heart attack or stroke, the risk of dying is substantially less compared to poor countries," said Dr. Salim Yusuf, principal investigator for the study.
Treatment for opioid addiction tampers with the testosterone levels of male but not female opioid users, McMaster University research has shown.
"We expect that treating testosterone deficiency will improve outcomes of methadone treatment for patients, including treatment response and retention," said Dr. Zena Samaan, principal investigator of the study.
A common knee surgery may not be beneficial and should be done less often, say McMaster University researchers.
Doctors need to be carefully weighing the costs and benefits when deciding who should undergo such surgery, says Dr. Moin Khan, principal investigator for the study and research fellow in orthopedic surgery in the Michael G. DeGroote School of Medicine.