Why is Tua retiring?

[{"selector":"#anim-74cffe5f-4486-4a17-90bc-8e4102ed876d","keyframes":{"opacity":[0,1]},"delay":250,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Tua Tagovailoa considered walking away from football after a series of head injuries last season.

[{"selector":"#anim-0bacf85b-5976-4d75-8e98-2bef187e55fb","keyframes":{"opacity":[0,1]},"delay":250,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Tagovailoa was diagnosed with two concussions last season and many questioned if it was safe for the Miami Dolphins quarterback to continue playing.

Why is Tua retiring?

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