Organic Snackers Underestimate Calories, Study Shows

Could organic labels lead you to overeat? These labels certainly appear to make people think their organic snack has a lot fewer calories than it really does.

These findings were presented at this week’s Experimental Biology conference in Anaheim, Calif. They showed that people who ate organic cookies labeled as “organic” believed that their snack contained 40% fewer calories than the same cookies that had no label, according to Jenny Wan-Chen Lee, a graduate student with the Cornell Food and Brand Lab.

“An organic label gives a food a ‘health halo,’ said coauthor, Brian Wansink, Cornell professor and author of the book, Marketing Nutrition. It’s the same basic reason people tend to overeat any snack food that’s labeled as healthy or low fat. They underestimate the calories and over-reward themselves by eating more.”

The study even identified two personality types most likely to make these low estimates – people who claim to “usually buy organic foods,” and those who typically read labels for nutritional information.

What if you don’t want to overeat an organic food? Read more

The Correct Combination Of Proteins Is Decisive For Healthy Aging, Not Reducing The Calories In Our Diet

A new study of the Max Planck Institute for Biology of Ageing could help to understand the positive effect of dietary restriction on healthy ageing. Previous evidence from different organisms (fruit flies and mice) have shown that dietary restriction increases longevity, but with a potential negative side effect of diminished fertility. So the female fruit fly reproduces less frequently with a reduced litter size on a low calorie diet, but its reproductive span lasts longer. This is the result of an evolutionary trait, as scientists believe: essential nutrients are diverted towards survival instead of reproduction. (Nature, December 3, 2009)

Researchers from the newly founded Max Planck Institute for Biology of Ageing in Cologne have studied whether health benefit stem from a reduction in specific nutrients or calorie intake in general by manipulating the diet of female fruit flies. The fruit flies were fed a diet of yeast, sugar and water, but with differing amounts of key nutrients, such as vitamins, lipids and amino acids. The scientists were able to show that longevity and fertility are affected by a combination of the type and amount of amino acids; whilst varying the amount of the other nutrients had little or no effect. Furthermore, the researchers found out in previous studies that levels of a particular amino acid – methionine – were crucial to increasing lifespan without decreasing fertility. By carefully manipulating the balance of amino acids, both lifespan and fertility were maximised. For the first time, this indicates that it is possible to extend lifespan without wholesale dietary restriction and without lowering reproductive capacity. Read more