If it's an unprocessed food, it's healthful, for the most part. You can't worry much about the day to day "science" of nutrition, because then you would never know what was safe to eat.
i don't know, probably the original was. i do remember seeing commercials from that campaign, and i don't really remember anything before the early 90s, but it could have just run for years, or had sequel commercials. besides, i did say "if my memory serves." and i spent enough of my youth with an egg brain that my memory often does not serve.
Look on the bright side. When that mercury level reaches 760,mm in your gut, you will be able to claim that you are the worlds first human barometer.