According to research by chocolate scientists there are many healthy effects, helping the skin to be more beautiful, helping blood circulation and stimulating the brain effectively. In addition, chocolate also reduces the growth of cancer cells But the above benefits, eating too much chocolate also brings a lot of harm. Weight gain: high calories in chocolate can lead to weight gain, the incidence of obesity is very high. The risk of diabetes is especially high in obese overweight people. Eating a lot of chocolate can be insomnia because in the composition of the chocolate contains a large amount of caffeine that causes insomnia