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24.07.2014


You'll put on weight less quickly with dark than milk chocolate

If you think we're about to claim that dark chocolate can help you lose weight, then you've got the wrong end of the stick. There are far too many calories in the stuff. But if you do want to eat chocolate, then confine yourself to the dark variety. According to researchers at the university of Copenhagen, you'll put on less weight than if you eat milk chocolate.

Breakfast with chocolate
The researchers gave 16 young men breakfast consisting of 100 g chocolate on two different occasions. On one occasion the chocolate was milk, on the other it was dark. The nutritional value of both types of chocolate is shown below.


You'll put on weight less quickly with dark than milk chocolate


Less appetite
Two hours after the chocolate breakfast the men were allowed to eat as much pizza as they wanted [Ad-lib meal]. At that point the researchers noticed that the men ate less pizza if they had eaten dark chocolate previously.


You'll put on weight less quickly with dark than milk chocolate


The milk chocolate breakfast had provided 546 kcals while the dark chocolate breakfast had provided 598 kcals. So the subjects who ate dark chocolate consumed more kcals than those who ate milk chocolate.

But even when the researchers corrected for this, and looked at the total amount of kcals that the subjects ate during the chocolate breakfast and the pizza lunch [Ad lib meal + chocolate], they noticed that the amount was 8 percent lower after the dark chocolate breakfast than after the milk chocolate breakfast.

The researchers also asked the men every half hour throughout the day to score how much they felt like having something sweet to eat. The score was lower after having consumed the dark chocolate breakfast.


You'll put on weight less quickly with dark than milk chocolate


Mechanism
"The results of the present study support the hypotheses that dark chocolate is more satiating than milk chocolate and that dark chocolate satisfies 'a sweet tooth' for a longer time than milk chocolate", the Danes write.

They put forward a theory about how this might work. "There have been no studies measuring the gastro-intestinal transit time of cocoa butter. If the gastro-intestinal-transit time of the dark chocolate is longer [...], then this will lead to a delayed absorption of fat in the gastro-intestinal tract."

"A delayed absorption of fat leaves more undigested fatty acids in the gastro-intestinal tract, which could lead to increased release of appetite-regulating gastro-intestinal hormones, such as cholecystokinin, glucagon-like peptide-1 and peptide YY."

Source:
Nutr Diabetes. 2011 Dec 5;1:e21.

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