While the popularity of electric bikes is surging, so are the injuries. An NBC Bay Area investigation offers an exclusive first look at soon-to-be-released data from top transportation experts, which reveals a more than 350% spike in e-bike-related injuries across the country.

Medical officials say the rise in e-bike popularity has resulted in a disturbing phenomenon in emergency rooms throughout America that has left riders with serious and even fatal injuries that far more resemble that of motorcycle crashes than accidents involving conventional bicycles.

While e-bike advocates continue to tout the vehicles as a safe and eco-friendly alternative to cars, even top industry voices acknowledge "deceptive" marketing practices by some manufacturers that appear to target the youngest and mos

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