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Dr Brian Buijsse believes a 50g treat has the greatest effect, reports “The Sun”.
To reach the conclusion, Buijsse studied nearly 30,000 people aged 35 to 65 in Germany.
His eight-year research found that even one small square can help. But if it was increased by 6g, there were 85 fewer heart attacks and strokes per 10,000 people.
Dr Buijsse said: “Given the promising health effects of cocoa, it is tempting to indulge in more chocolate.”
“But we should make sure we are eating as part of a healthy and balanced diet.”
“Small amounts of chocolate may help to prevent heart disease, but only if it replaces other energy-dense food - such as snacks - in order to keep body weight stable.”

Cakes, frostings that won’t let you pile on pounds
Thanks to an Indian-origin US scientist, yummy new cakes and frostings may one day contain less fat and fewer calories.
In experiments at her Peoria laboratory, Mukti Singh is formulating low-fat cake mixes and frostings with Fantesk-microdroplets of trans-fat-free cooking oil, encapsulated in cornstarch or wheat flour. Fantesk was developed in the 1990s by NCAUR chemists George Fanta and the late Kenneth Eskins.
Mukti is based at the ARS National Center for Agricultural Utilization Research (NCAUR) in Peoria, Ill.
Singh’s experiments have shown that, when making a cake with a mix that contains Fantesk, cooking oil doesn’t have to be added. And, the mixes containing Fantesk produce low-fat cakes that have better texture and a higher volume.
Furthermore, the lower-fat frostings that Singh and Peoria chemical engineer Jeffrey Byars are creating with Fantesk have the smooth texture and spreadability of buttercream favourites, yet contain up to 50 percent less fat.

Avatars on treadmill could encourage us to exercise
A study has found that watching a self-resembling avatar in action turns out to be an effective motivational technique to start exercising.
According to a Stanford University research project, participants who watched digital versions of themselves run on a treadmill ended up exercising nearly an hour longer than those who watched their avatars hang out or viewed avatars of other people exercising.
“We’re definitely surprised that the manipulation worked,” Discovery News quoted Stanford doctoral student Jesse Fox, who oversaw the studies, as saying. “I was very fascinated,” she stated.
Fox, who describes herself as a social scientist who didn’t even own a computer, was curious how digital technologies could impact health and other behaviours. In three studies, each of which had about 80 participants, she found that virtual representations are a powerful motivation tool.
“When we see models that look like us, we’re inclined to imitate the behaviours,” she said.

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