Olive oil contains a huge amount of oleic acid. German scientists have proven that after its use, the appetite is lowered, saturation is faster, and the level of serotonin, the hormone of joy, increases significantly randomstuffido.com. You can lose up to 4-5 kg a month by drinking an olive elixir in the morning. The main condition is a healthy diet throughout the day. During the day, you can use another tablespoon for your salad or porridge.