Patrick House -- the winner of "The Biggest Loser" Season 10 -- says he thinks the documentary wasn't completely fair to Jillian Michaels ... and, he's got nothing but wonderful things to say about the reality competition.

We caught up with the former reality star in light of the controversial Netflix documentary "Fit for TV: The Reality of the Biggest Loser" ... and, he says he declined to interview because he didn't know how the show would be painted. Getty

House credits 'TBL' for saving his life ... admitting he was told he was a ticking time bomb when he joined the show -- and, now he's got kids, a wife and a whole new lease on life.

Patrick says he doesn't think the documentary did Jillian Michaels any justice ... particularly casting her in a bad light just because she did

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