Rick would like to thank everyone who has supported him during this hard time period, " the statement read.
The winger suffered a concussion at the end of March 2018 and missed the Bruins' final 12 games of the season but he did return for the playoffs and played in all 12 of the Bruins' post-season games.
"Due to unresolved issues/symptoms from the concussion sustained last March, Rick Nash will be forced to retire from the game of hockey", the statement reads.
Now 34, he told teams at the start of free agency that he wasn't yet ready to play. "Under the advice of his medical team, the risk of further brain injury is far too great if Rick returns to play", his agent Joe Resnick said in a statement.
Nash totaled 437 goals and 368 assists for 805 points in 1,060 career regular-season games.
He had 34 points (21 goals, 13 assists) in 71 games with Boston and the Rangers in 2017-18, including six points (three goals, three assists) in 11 games after he was acquired February 25 in a trade for forwards Ryan Spooner and Matt Beleskey, defenseman Ryan Lindgren and two draft picks.
The Ontario native won two Olympic gold medals together with the Canadian team and claimed the world title and 2007 world tournament in Moscow.
Eligible for unrestricted free agency when his contract expired at the end of last season, Nash chose to take some time away from the game and mull his future.
There had been speculation that Nash would sit out the summer free-agency frenzy and return to the National Hockey League later in the season, perhaps when there was more clarity on which teams were contending for the Stanley Cup. He had five points (three goals, two assists) in 12 Stanley Cup Playoff games. He was still on the fence in October, when he spoke to The Athletic about his future. It's been really tough. There's a chance I could get healthy, come back and be great.
Copy editor Sam McCaig rejoined The Hockey News in 2017 after previously working at THN from 1999 to 2010.