Scientists have proven that "eating nuts, olive oil, and whole grain products for breakfast is more beneficial for health than consuming eggs." Researchers at the German Center for Diabetes Research in Düsseldorf conducted an experiment with volunteers divided into two groups. The researchers asked members of the first group to eat whole grain products instead of meat, olive oil instead of butter, and nuts instead of eggs. Meanwhile, the members of the second group did not change anything in their breakfast foods. The results of the experiment showed that "the health indicators of the first group improved significantly. Consuming nuts reduced the risk of cardiovascular diseases by 17 percent, and eating whole grain products and olive oil reduced it by 36 percent." It is noted that "nuts contain a large amount of proteins, fats, carbohydrates, dietary fibers, vitamins, and minerals. Therefore, they are included in the list of recommended products for treating and preventing dementia (walnuts are particularly beneficial)." However, according to studies, the prevention of heart disease is best achieved by consuming almonds. Additionally, it has been proven that "adding almonds to a calorie-restricted diet helps in eliminating excess weight."