When trying to lose weight, people always forget how much willpower it takes to avoid eating foods that are constantly flashed in front of your face. There are tools that can help obtain a healthy diet. Specific foods are known to protect against certain health issues. For example avocados, even though they are high in fat, Protect against cholesterol. The fats that are in avocados are good fats. These fats also help to protect the general health of your heart. In addition, fish oils help to protect against arthritis.