Is the food pyramid a good guide to healthy eating?

Marion Nestle: Well the food pyramid as it stands today doesn’t even have any food on it.  You have to have a computer and go online and then try to sort through everything that’s on the web site in order to figure out what it’s advising.  And in that sense it’s . . .  it took away the new pyramid which came out in 2005; took away the real value of the old one.  The old one had flaws, but one of the thing it did . . . one of the things it did very well, I think, was to indicate that it was better to eat some foods than others.  Better for health.  And the new pyramid doesn’t make that point nearly as clearly.  Nutritionists tell me that they can’t use it; that it’s so difficult to teach from, to explain that they don’t use it.  I really don’t know anybody who uses it to teach or for any purpose whatsoever.

Nestle doesn't know anyone who uses it as a guide.

Study: ADHD is overdiagnosed and overtreated

Like autism, ADHD lies on a spectrum, and some children should not be treated.

Photo: NDABCREATIVITY / Adobe Stock
Surprising Science
  • ADHD is an extremely contentious disorder in terms of diagnosis and treatment.
  • A research team examined 334 studies on ADHD published between 1979 and 2020.
  • The team concluded that ADHD is being overdiagnosed and overtreated in children with milder symptoms.
  • Keep reading Show less

    How space debris created the world’s largest garbage dump

    Since 1957, the world's space agencies have been polluting the space above us with countless pieces of junk, threatening our technological infrastructure and ability to venture deeper into space.

    Framestock via Adobe Stock
    Technology & Innovation
    • Space debris is any human-made object that's currently orbiting Earth.
    • When space debris collides with other space debris, it can create thousands more pieces of junk, a dangerous phenomenon known as the Kessler syndrome.
    • Radical solutions are being proposed to fix the problem, some of which just might work. (See the video embedded toward the end of the article.)
    Keep reading Show less

    Golden blood: The rarest blood in the world

    We explore the history of blood types and how they are classified to find out what makes the Rh-null type important to science and dangerous for those who live with it.

    Abid Katib/Getty Images
    Surprising Science
    • Fewer than 50 people worldwide have 'golden blood' — or Rh-null.
    • Blood is considered Rh-null if it lacks all of the 61 possible antigens in the Rh system.
    • It's also very dangerous to live with this blood type, as so few people have it.
    Keep reading Show less

    Looking for something? A team at MIT develop a robot that sees through walls

    It uses radio waves to pinpoint items, even when they're hidden from view.

    TORU YAMANAKA/AFP via Getty Images
    Technology & Innovation
    In recent years, robots have gained artificial vision, touch, and even smell.
    Keep reading Show less
    Quantcast