Dark chocolate is healthier than white, a new study shows. 

Researchers from San Diego State University compared the health effects of consuming two types of chocolate - white and dark, containing 70% cocoa. 
Cocoa contains flavonols, which are known for their antioxidant and anti-inflammatory properties.
The study involved 31 men and women who consumed about 50 g of dark or white chocolate every day for 15 days. Before and after the experiment, the researchers measured the participants' blood pressure, blood sugar and cholesterol levels.
The results show that compared to white chocolate, the consumption of natural leads to lower blood sugar levels and a reduction of "harmful" LDL cholesterol by 20%. The "good" HDL cholesterol also increases by 20%. 
There was no difference in blood pressure between white and dark chocolate consumers. 
According to scientists, the antioxidants in cocoa help the body use insulin more effectively to control blood sugar. This, in turn, contributes to lowering its levels naturally.