Social media users shared a range of false claims this week. Here are the facts:

• There is no scientific evidence that root canals cause heart attacks; he false claim stems from 1920s research that has been disproved through controlled research studies.
• A decision by federal officials to use updated COVID-19 vaccines was not made because of safety concerns about the original shots.
• Videos shared on social media show behind-the-scenes footage from a film about the Russia-Ukraine war; it doesn't show people "staging" war footage.
• A new United Nations report doesn't call for decriminalizing sexual activity between adults and minors.

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Root canals don't cause heart attacks, experts say

CLAIM: The No. 1 cause of heart attacks is a tooth treated for a root canal.

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THE FACTS: There's no credible scientific evidence that having a root canal can cause a heart attack, according to endodontists and cardiologists.

But social media posts claiming there's a causal link between the two are perpetuating a century-old myth. The claims, which amassed thousands of likes on Facebook this week, were made in...

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