Worried about the health effects of the sugar in your breakfast cereal? Little has changed since the days of ‘Unfrosted,’ the Pop-Tarts movie

While Jerry Seinfeld, Melissa McCarthy, Amy Schumer and Hugh Grant got top billing, sweet breakfast foods from the 1960s are arguably the real stars of the recent movie “Unfrosted,” a comedy loosely based on the invention of Pop-Tarts.

What’s more, many of those breakfast products…