Benefits and harms of coffee Accelerates metabolism, albeit slightly, and increases the energy spent at rest. It increases blood circulation to the brain, makes the person feel more vigorous and makes the attention more intense. When coffee is drunk with milk, when it enters the body with balanced protein, carbohydrate and fat, it keeps the person longer. Insulin resistance reduces the person's sweet need due to its crushing effect. Especially those who want dessert often, if they drink coffee instead of dessert will see that the need is lost. Many studies have reported that it may prevent diabetes. There are also studies that may have a protective effect on regular consumption against Alzheimer's and Parkinson's disease. Strengthens memory in the elderly. People with frequent migraine attacks can prevent migraine attacks because of contraction in the brain vessels. However, the frequency of migraine attacks may increase if they leave coffee suddenly in very frequent coffee users.