Questions run across a host of topics, and in September you can challenge yourself in mortality risk, myocardial infarction (MI), insomnia, liver cancer, lipids, and Parkinson’s disease guidelines. Each question is worth 4 points with bonuses for quick response. Speed matters in this quiz. Why not give it a try and see if you can get on the leaderboard of the Smartest Doc?

To assess short-term risk for severe cardiovascular events (excluding myocarditis and pericarditis) after COVID-19 vaccination, adults younger than 75 years hospitalized for PE, acute MI, hemorrhagic stroke, or ischemic stroke (73,325 events) were reviewed in relation to a 1st or 2nd COVID vaccine dose. No association was found between the Pfizer–BioNTech or Moderna vaccine and severe cardiovascular events. The first dose of the Oxford–AstraZeneca vaccine was associated with acute MI and PE in the second week after vaccination. An association with MI in the second week after a single dose of the Janssen vaccine could not be ruled out.

The USPSTF comes to the conclusion that statin use has at least a moderate net benefit for adults aged 40 to 75 who have no prior history of CVD, at least one CVD risk factor, and an estimated 10-year CVD event risk of 10% or greater. There is at least a marginal net benefit from using statins to prevent CVD events and all-cause mortality in adults aged 40 to 75 who have no prior history of CVD, at least one of these risk factors, and an estimated 10-year CVD event risk of 7.5% to less than 10%. Still, is the evidence enough?

The founding editor of Comprehensive Clinical Nephrology teases out for us our physiologic response to salt, sugar, fat, and water that creates a recipe for obesity – a recipe being used daily by many Americans with obvious results. His recommendation? “Drinking more water and reducing salt intake offer cheap, easy and healthy strategies that may prevent or treat obesity.” Click to see the evidence behind the conclusion.

This review with case example explores pericarditis and myocarditis and implications on limiting exercise. The authors summarize relevant guidelines and provide their own conclusion and guidance. They offer a helpful algorithm combining the ESC, ACC, and AHA guidelines and suggest an additional element around limiting heart rate during an acute inflammatory episode.

Among 150 people ages 65 to 88, investigational transcranial alternating current stimulation for 20 minutes over 4 consecutive days produced selective improvements in working and long-term memory in older adults that lasted for at least a month The rate of memory improvement over 4 days predicted the size of memory benefits 1 month later, the researchers found. Moreover, people with lower baseline cognitive function experienced larger and longer lasting memory improvements. “We found that by applying extremely weak electrical current safely and noninvasively to the prefrontal cortex at a high frequency, we could selectively improve long-term memory in older people aged 65 to 88 years old without changing short-term memory.” Robert Reinhart, PhD, Boston University in Nature Neuroscience