She said studies done in the 1990s showed that users of Swedish snus in the 1970s faced a twofold increase in the risk of oral cancer. How much to rely on those studies now is unclear, she said, given that the company has reduced the cancer-causing nitrosamines in snus.
For the Louis Armstrong song, see What a Wonderful World. Wonderful World (occasionally referred to as (What A) Wonderful World) is a song by American singer-songwriter Sam Cooke.
They Say It's Wonderful is track #10 on the album Coltrane for Lovers. It was written by Irving Berlin. (No other information is available for this lyric-would you like to add something today?).