"Acute effects of diet are mostly small, but may have large consequences in the long run," said Suzan Wopereis, a researcher from TNO, Microbiology and Systems Biology Group in Zeist, The Netherlands.

To make this discovery, Wopereis and colleagues used two groups of male volunteers. The first group included 10 healthy male volunteers.
    
The second group included nine volunteers with metabolic syndrome and who had a combination of two or more risk factors for heart disease, such as unhealthy cholesterol levels, high blood pressure, high blood sugar, high blood lipids, and abdominal fat.
    
Both groups had blood samples taken, before and after consuming a high-fat milk-shake. In these blood samples, the researchers measured 61 biomarkers, such as cholesterol and blood sugar.
    
They found that biochemical processes related to sugar metabolism, fat metabolism and inflammation were abnormal in subjects with metabolic syndrome.

The 10 healthy male volunteers were also given a snack diet consisting of an additional 1300 kcal per day, in the form of sweets and savoury products such as candy bars, tarts, peanuts and crisps for four weeks.
    
The study was published in The FASEB Journal.

 

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