Dark chocolate has been shown to be beneficial to human health, but milk ,white , and other varieties are not. For dark one to be beneficial, cacao or chocolate liquor should be the first ingredient listed, not sugar.
Research suggests that dark chocolate boosts memory, attention span, reaction time, and problem-solving skills by increasing blood flow to the brain. Studies have also found that dark chocolate can improve the ability to see in low-contrast situations (such as poor weather) and promote lower blood pressure, which has positive effects on cholesterol levels, platelet function, and insulin sensitivity.
The first machine-made chocolate was produced in Barcelona, Spain, in 1780.
Approximately 40% of almonds produced in the world are made for chocolate products.