Scientists in Canada have found that ketone supplements don't improve performance after all and could actually make it worse.

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Pfizer Says COVID-19 Pill Cut Hospital, Death Risk by 90%
Pfizer Inc. said Friday that its experimental antiviral pill for COVID-19 cut rates of hospitalization and death by nearly 90% in high-risk adults, as the drugmaker joins the race to bring the first easy-to-use medication against the coronavirus to the U.S. market.
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