Latest / Morning Medical with Dr. Chow / Marijuana and Heart Health, Early Cancer Detection, and New COVID Variant 'Nimbus' Insights

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Marijuana and Heart Health, Early Cancer Detection, and New COVID Variant 'Nimbus' Insights · Morning Medical with Dr. Chow

• 0:00
  Welcome to Morning Medical with Dr.
• 0:02
  Chow, where we bring you the latest medical and health news from around the globe.
• 0:06
  I'm your host, Dr.
• 0:08
  Chi-Ming Chow, a cardiologist and Professor of Medicine at the University of Toronto.
• 0:13
  Today, we'll be discussing a significant study that sheds new light on the potential risks of
• 0:19
  marijuana use, especially concerning heart disease.
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  A recent analysis published in the journal Heart has found that using marijuana can double
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  the risk of dying from heart disease.
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  This large-scale study pooled medical data from over 200 million individuals, primarily aged
• 0:39
  between 19 and 59.
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  What's particularly concerning is that the patients analyzed were young and typically did
• 0:47
  not have any pre-existing cardiovascular conditions or risk factors.
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  The study also highlighted that cannabis users had a 29% higher risk of heart attacks and a
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  20% increased risk of strokes compared to nonusers.
• 1:03
  Dr.
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  Lynn Silver, a clinical professor of epidemiology and biostatistics at the
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  University of California, San Francisco, emphasized the importance of these findings,
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  pointing out that cardiovascular disease remains the leading cause of death both in the
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  United States and worldwide.
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  Dr.
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  Silver also called for a shift in how cannabis is perceived by health professionals and the
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  public.
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  She suggested that clinicians should screen for cannabis use and educate patients about its
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  potential harms, similar to the approach taken with tobacco.
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  This is increasingly important as cannabis is reportedly used more widely than tobacco in
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  some population groups.
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  One of the reasons for concern is the higher potency of marijuana available today.
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  Modern cannabis products can be significantly stronger than what was available in the past,
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  with some concentrates and vapes containing very high levels of tetrahydrocannabinol, or
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  THC.
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  This increased potency can contribute to a higher risk of addiction and other health
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  issues, including psychosis and uncontrollable vomiting.
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  The study did not differentiate between the various methods of cannabis consumption, such
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  as smoking, vaping, or edibles, but it's believed that smoking was the most common
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  method.
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  Regardless of how it's consumed, the potential for harm remains, as inhaling any smoke,
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  whether from tobacco or cannabis, can damage blood vessels and increase the risk of
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  cardiovascular disease.
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  Experts are urging caution, particularly for those with existing heart disease risk factors.
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  Dr.
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  Silver advised that if you have any concerns about heart disease, it's wise to think twice
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  about using cannabis.
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  This is especially true for older individuals who might be using cannabis for pain relief or
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  sleep but are unaware of the associated cardiovascular risks.
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  Today, we're turning our attention to a groundbreaking study that suggests cancer could
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  potentially be detected up to three years before a formal diagnosis, thanks to an
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  experimental blood test.
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  This research, published in the journal Cancer Discovery, was conducted by a team at Johns
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  Hopkins University and partially funded by the National Institutes of Health.
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  The study focused on what is known as a multi-cancer early detection test, or MCED
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  test, which is an innovative type of screening that looks for signs of multiple cancers
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  simultaneously.
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  These signs might include pieces of deoxyribonucleic acid, ribonucleic acid, or
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  proteins that are shed by abnormal cells into the bloodstream.
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  Researchers analyzed plasma samples from the Atherosclerosis Risk in Communities study,
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  which is a large-scale endeavor aimed at assessing risk factors for cardiovascular
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  diseases like heart attack and stroke.
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  For this investigation, they looked at blood samples from 26 participants who were diagnosed
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  with cancer within six months of the sample collection, and 26 who were not diagnosed with
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  cancer.
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  Out of these 52 participants, eight had positive results on the MCED test and were
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  diagnosed with cancer within four months following blood collection.
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  Remarkably, for six of these individuals, the researchers had access to additional blood
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  samples that were collected 3.1 to 3.5 years prior to their cancer diagnosis.
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  In four of these samples, they identified tumor-derived mutations, which are genetic
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  alterations within cancer cells.
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  Lead study author Dr.
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  Yuxuan Wang expressed that the findings were surprising and highlighted the potential impact
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  of detecting cancer so early.
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  She noted that identifying tumors three years earlier could provide critical time for
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  intervention, as these tumors are likely to be much less advanced and, therefore, more
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  curable.
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  Dr.
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  Bert Vogelstein, senior study author and co-director of the Ludwig Center at Johns
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  Hopkins, emphasized the promise of MCED tests in detecting cancers at a very early stage.
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  He pointed out that this study sets a benchmark for the sensitivities required for these tests
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  to be successful.
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  Dr.
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  Nickolas Papadopoulos, another senior author, mentioned the importance of determining the
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  appropriate clinical follow-up after a positive MCED test result.
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  This is crucial, as early detection could significantly improve management and outcomes
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  for patients diagnosed with cancer.
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  Today, we'll wrap up with the latest on a new COVID-19 variant known as NB.1.8.1, or more
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  informally, "Nimbus." This variant has been gaining attention due to a particularly
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  uncomfortable symptom dubbed "razor blade throat." According to the Centers for Disease
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  Control and Prevention, Nimbus accounted for an estimated 37% of COVID-19 cases in the United
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  States during a two-week period ending June 7.
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  Dr.
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  Marc Siegel, a senior medical analyst, mentioned that although Nimbus seems more
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  transmissible, it does not appear to be more virulent than other variants.
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  However, the symptom of "razor blade throat" has become a hallmark of this strain.
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  Patients describe this symptom as an extremely painful sore throat, likening it to the
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  sensation of swallowing razor blades or shards of glass.
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  Emergency room physician Dr.
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  Kenneth Perry explained that the sore throat is caused by the direct infection of throat cells,
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  leading to significant irritation.
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  He noted that while symptoms have varied across different COVID-19 strains, the sore throat
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  remains a prominent symptom of the Nimbus variant.
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  It's important to remember that an intense sore throat does not necessarily indicate a COVID-19
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  infection, as pharyngitis, the medical term for sore throat, can have multiple causes,
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  including bacterial infections, allergies, and acid reflux.
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  Dr.
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  Perry emphasized that while about 20% of sore throats are bacterial, the majority are viral,
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  with COVID-19 being just one potential cause.
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  For those experiencing throat pain, treatment will depend on the underlying cause.
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  Traditional remedies like honey, gargling salt water, and staying hydrated can help alleviate
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  symptoms.
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  Anti-inflammatory medications such as ibuprofen or naproxen may also be beneficial.
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  However, if the sore throat persists, it is advisable to consult a healthcare professional
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  for a proper diagnosis and treatment plan.
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  And that concludes today's episode of Morning Medical with Dr.
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  Chow.
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  I hope you found our discussions insightful and informative.
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  Join us again tomorrow for more updates on the latest in medical and health news.
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  Until then, take care and stay healthy.