The letter cited several studies that showed stimulants such as caffeine mask the intoxicating effects of alcohol and could lead to increased risk-taking and other alcohol-related problems such as violence, sexual assault, traffic accidents and even suicide.

CNN: FDA: Caffeinated alcoholic drinks may be illegal

Ms. Taylor finished her workday wearing the mask, with no ill effects, says Ms. Ioannou.

WSJ: People Who Never Miss a Day of Work

Such policies just mask inflation and can make its effects worse by encouraging demand for items that are in scarcity.

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