###Human: What are the benefits of using krill oil for brain and heart? ###Assistant: Hello. I passed carefully through your concern and would like to explain that krill oil is a good source of omega-3 fatty acids, which have proven beneficial to the brain and nerve endings activity. But, it shows only mild beneficial effects on the heart. Anyway, it has no adverse cardiac properties and you should not be concerned about any cardiac issues while using krill oil. It will not significantly affect your blood pressure or heart rate. You may follow a normal daily activity without any need to monitor specific cardiac parameters or blood tests.