Vaccination

FDA adds warning about rare reaction to J&J COVID-19 vaccine

U.S. regulators on Monday added a new warning to Johnson & Johnson's COVID-19 vaccine about links to a rare and potentially dangerous neurological reaction, but said it's not entirely clear the shot caused the problem.

Cardiology

Q&A: COVID-19 vaccination and heart issues

DEAR MAYO CLINIC: I have been hearing about an increase in the number of young people who are developing heart issues, including myocarditis, after being vaccinated for COVID-19. Can you explain this condition? I have a 15-year-old ...

Cardiology

Converting scar tissue to heart muscle after a heart attack

It is estimated that during a heart attack, one billion cells in the heart are lost. In the wake of the heart attack, the lost tissue is replaced by scar tissue, which can lead to heart failure, arrhythmia and death. In a ...

Medical research

Muscle gene linked to type 2 diabetes

People with type 2 diabetes tend to have poorer muscle function than others. Now a research team at Lund University in Sweden has discovered that in type 2 diabetes, a specific gene is of great importance for the ability ...

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