- Smoking marijuana can increase your chances of a stroke and heart failure
- The risk of stroke increased by 26 percent and heart failure by 10 per cent
- It was also linked to factors associated with heart problems including obesity, high blood pressure, smoking and alcohol use
Using marijuana can increase your chances of a stroke and heart failure, a new study has warned.
Scientists say that smoking cannabis increases the stroke by 26 percent and heart failure by 10 percent.
The
drug was also linked with a variety of factors known to increase
cardiovascular risk, including obesity, high blood pressure, smoking and
alcohol use.
As more states look to
legalize the drug, or to prescribe it medically to alleviate symptoms of
other diseases, the study sheds new light on how the drug can seriously
affect cardiovascular health.
Smoking marijuana can increase your risk of both a stroke and heart failure, a new study warns
The
study analyzed over 20 million records of young and middle-aged
patients from the Nationwide Inpatient Sample - compiled from one-fifth
of all US health centers.
The patients
fell between the ages of 18 and 55 and were discharged from over 1,000
hospitals in 2009 and 2010, when recreational marijuana use was illegal
in every state.
Researchers found that 316,000 patients, or 1.5 percent, had marijuana use written in their charts.
Compared
to patients who didn't report cannabis use, the team found a
significantly increased risk in the pot-smoking patients for stroke,
heart failure, coronary artery disease and sudden cardiac death.
The drug carried a higher risk even
after accounting for demographic factors, other health conditions and
lifestyle risk factors such as smoking tobacco and drinking.
'Even
when we corrected for known risk factors, we still found a higher rate
of both stroke and heart failure in these patients, said lead author Dr
Aditi Kalla, a cardiology fellow at the Einstein Medical Centre in
Philadelphia.
'So that leads us to
believe that there is something else going on besides just obesity or
diet-related cardiovascular side effects.
'More research will be needed to understand the pathophysiology behind this effect.'
Cell cultures in the study showed heart muscle cells have cannabis receptors relevant to contractility, or squeezing ability.
This suggests that the receptors could be one mechanism affecting the cardiovascular system.
However,
there are other compounds that could be developed to counteract that
mechanism and reduce cardiovascular risk, according Dr Kalla.
She
added: 'Like all other drugs, whether they're prescribed or not
prescribed, we want to know the effects and side effects of this drug
'It's
important for physicians to know these effects so we can better educate
patients such as those who are inquiring about the safety of cannabis
or even asking for a prescription for cannabis.'
Previous studies has focused on the harm caused to the lungs or the mental state by marijuana use.
The
researchers noted that because the study was based on hospital
discharge records, the findings may not be reflective of the general
population.
Dr Kalla said that the
growing trend toward legalization of marijuana in the US could mean that
patients and doctors will become more comfortable speaking openly about
marijuana use.
She says this would allow for better data collection and a better understanding into the drug's direct effects and side effects.
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