(CNN) The White House announced Friday that President Donald Trump intends to appoint Mehmet Oz, better known as Dr. Oz, to his council on sport, fitness and nutrition.

Oz is well-known as a host of an eponymous television show on health and medical issues and, before that, for appearances on "The Oprah Winfrey Show." But he has become a lightning rod for controversy for featuring what critics say is unscientific advice on his show.

In 2014, a congressional panel questioned Oz over his promotion of weight-loss products on his television show.

"The scientific community is almost monolithic against you in terms of the efficacy of the three products you called 'miracles,'" Sen. Claire McCaskill, a Missouri Democrat, said during the Senate Commerce, Science and Transportation subcommittee hearing.

The following year, a group of doctors criticized him harshly, saying he manifested "an egregious lack of integrity" in his TV and promotional work and called his faculty position at Columbia University unacceptable.

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