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80beats

Posts Tagged ‘Britain’

Food Guides: Out With the Pyramid, In With the Plate—And Don’t Forget the Pagoda

<p>This morning, the USDA bid farewell to the food pyramid and <a href="http://www.usda.gov/wps/portal/usda/usdahome?contentid=2011/06/0225.xml&amp;contentidonly=true">unveiled</a> a “new generation icon” of healthy eating: MyPlate. Four brightly colored wedges show what proportion of our plates ought to be filled with fruits, veggies, grains, and protein, accompanied by a glass or side dish of dairy. Fats, oils, and sweets are nowhere to be found. This new design, health officials hope, will give people a clearer idea of portion size than the original food pyramid did—and be just plain clearer than the updated (read: undecipherable) food pyramid released in 2005.</p>
<p>So, how does MyPlate compare to other dietary graphics? Here’s a look back at past USDA visuals—and a glimpse of healthy eating guides from around the world.</p><p>In 1943, the USDA released this chart detailing the “Basic 7,” designed to help people plan nutritious meals despite the food rationing and shortages of World War II. Circular shape aside, the Basic 7 bear little resemblance to the new MyPlate. Potatoes are a vegetable, “butter and fortified margarine” warrant their own food group, and serving size is never mentioned. (Eating fruits and veggies of different colors to get a variety of nutrients, however, is still recommended today; in detailing the MyPlate food groups, USDA suggests you <a href="http://www.choosemyplate.gov/foodgroups/index.html">“vary your veggies.”</a>)</p>
<p>And in contrast to modern dietary guides, which try to reign in calorie count, not just advise on nutrients, a note at the bottom told consumers that the guidelines were just for starters: “In addition to the Basic 7… Eat any other foods you want.”</p>
<p>In 1956, with rations lifted, the USDA changed the Basic 7 to the Basic Four: milk; meat; fruits and vegetables; and grains. Like the Basic 7, these guidelines focused on getting enough important nutrients rather than avoiding unhealthy foods.</p><p>The USDA rolled out the original Food Guide Pyramid in 1992. The graphic was designed to tell people, at a glance, how much they should be eating of various types of food. Gone were the days of butter as a basic; the pyramid placed fats, oils, and sweets at its tiny tip, without any alluring illustrations.</p>
<p>Many experts <a href="http://www.archives.gov/global-pages/larger-image.html?i=/press/press-kits/whats-cooking/images/21406-l.jpg&amp;c=/press/press-kits/whats-cooking/images/21406.caption.html">took issue</a> with the pyramid. Among other problems, it encouraged people to eat too many carbs—particularly as portion sizes grew—and portrayed all fat as bad, rather than making room for healthy dietary fats. Plus, who knew what a serving size was? Most people weren’t carefully comparing their steak to a <a href="http://www.cancer.org/Healthy/EatHealthyGetActive/TakeControlofYourWeight/controlling-portion-sizes">deck of cards</a>.</p><p>So in 2005, the food pyramid got a make-over. The USDA called the MyPyramid <a href="http://www.choosemyplate.gov/global_nav/media_press_release.html">“deliberately simple”</a>—but the graphic was so sleek it contained almost no information. The stripes were meant to represent different food groups, with the width of each band showing its proportional share of a healthy diet. But as nothing edible was actually pictured, it was hard to figure out what was what (meat is purple? huh?). “I call it foodless and useless," nutrition and public health researcher Marion Nestle, <a href="http://www.latimes.com/health/la-he-food-pyramid-20110602,0,6436170.story">told <em>the Los Angeles Times</em></a>.</p>
<p>The only intuitive part of the new guide was the figure climbing stairs up the side: a nod to physical activity as part of a healthy lifestyle.</p><p><a href="[link: http://www.health.gov.au/internet/main/publishing.nsf/Content/health-pubhlth-strateg-food-guide-whatis.htm">The Austrialian Guide to Healthy Eating</a> lays out what proportion of your food should come from each food group, but doesn’t specify portion size. Although it looks a bit like a plate-based guide,  it’s not about the portions at a given meal, as MyPlate is: it depicts a healthy overall food intake. It also has junk food and soda off to the side, allowing that, while they shouldn’t be a main component of a healthy diet, they can be an occasional addition to one.</p><p>For its healthy eating guidelines, Japan inverted the pyramid to make a spinning top. Small amounts of dairy and fruit make up the tip, followed by increasingly large layers of fish and meat, vegetables, and grains. The top is crowned by a drinking glass, an instruction to drink enough healthy beverages like water and tea, and a human figure using the top’s flat surface as a treadmill, showing the importance of exercise.</p><p>The Chinese have also come up with a riff on the pyramid, swapping it for an architectural symbol closer to home: the Food Guide Pagoda. The relative proportions are fairly similar to those in the original USDA pyramid, though the pagoda draws a distinction between meat and vegetarian protein sources. How much to eat from each group, however, is spelled out in grams, not abstract “servings.”</p><p>Like MyPlate, the <a href="http://www.food.gov.uk/scotland/scotnut/eatwellplate/">UK eatwell plate</a> tells you how to fill up your plate: about a third vegetables and fruits, a third grains, and the rest split between meat, dairy, and fats and sugars. While there’s a lot going on for one plate, this guide works to get across both what and how much you should eat at a given meal. And in a nice touch, the wedge representing fats and sugars calls to mind, appropriately, a slice of cake.</p><p>The Finnish have taken the idea of a food plate model to a <a href="http://www.ravitsemusneuvottelukunta.fi/portal/en/nutrition_recommendations/">more fundamental level than the Brits and Americans</a>: They just go with a photo of a healthy meal. The model uses a few exemplars rather than whole categories—don’t worry, no one’s saying you have to eat boiled potatoes or green beans every day—but looking at a real, nutritious meal carries a clear message: If your plate looks like this plate, you’re good to go.</p>
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June 2nd, 2011 Tags: Australia, Britain, China, Finland, food, japan, nutrition, public health
by Valerie Ross in Health & Medicine, Photo Gallery, Top Posts | 13 Comments » | RSS feed | Trackback >

Scientist Smackdown: When Did Europeans First Harness Fire?

What happens when evolutionary biology disagrees with archeology? If you’re thinking “scientific headache,” you’re right. New research suggests that Europeans first regularly used fire no earlier than 400,000 years ago—an assertion that, if true, leaves evolutionary anthropologists in a lurch because this date isn’t linked to the substantial physiological changes we’d expect with the advent of cooked food.

The Controversy

The majority of archeologists think that early humans’ control of fire is tied to their migration out of Africa. After all, how else would the first Europeans cope with the freezing winters?

Based on archeological evidence, we know that early humans first arrived in southern Europe over a million years ago, and—based on the Happisburgh site —reached England around 800,000 years ago. So the problem with the new 400,000 year-old date is that it means that hominids suffered through hundreds of thousands of years of cold winter unaided by fire. And according to evolutionary biologists, this new date clashes with the idea that cooked food aided the evolutionary enlargement of the human brain.

The 400,000-Year-Old Evidence

(more…)

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March 15th, 2011 Tags: archeology, Britain, Europe, evolution, Human Origins, invention of fire
by Patrick Morgan in Human Origins | 15 Comments » | RSS feed | Trackback >

Scientist Smackdown: French Strike Back Against British G-Spot Study

GAs if soccer, wars of incredible length, and the relative worth of wine vs. beer didn’t account for enough disagreements between Britain and France, add another spat to the pile: whether or not the G-spot really exists.

A few weeks ago, a team of scientists from King’s College London joined the ongoing scientific fray by publishing a new study on the much-debated female erogenous zone. It was the biggest to date, involving 1,800 women – all of whom were pairs of identical or non-identical twins. If the G-spot did exist, it said, then genetically identical twins would have been expected to both report having one. However, no such pattern emerged [The Telegraph]. As a result of the study, coauthor Tim Spector said, the study “shows fairly conclusively that the idea of a G-spot is subjective.”

(more…)

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January 29th, 2010 Tags: Britain, France, Scientist Smackdown, sex & reproduction, sex & the brain
by Andrew Moseman in Health & Medicine, Mind & Brain | 18 Comments » | RSS feed | Trackback >





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      80beats is written by Veronique Greenwood and Valerie Ross. This team darts through each day's science news faster than the ruby-throated hummingbird that beats its wings 80 times per second. Send ideas, tips, suggestions, and complaints to [azeeberg at discovermagazine dot com].



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