For most people, the evidence supporting the heart-health benefits from fish are stronger than for supplements. However, people who have heart disease may benefit from supplements of omega-3 fatty acids and should discuss this with their doctor. Other non-fish food options that do contain some omega-3 fatty acids include flaxseed, flaxseed oil, walnuts, canola oil, soybeans and soybean oil. However, like with supplements, the evidence of heart-healthy benefits from eating these foods isn't as strong as it is from eating fish.

Caffeine can be habit-forming, so any attempts to stop or lessen the amount you normally consume can be challenging. An abrupt decrease in caffeine can cause withdrawal symptoms, such as headaches, fatigue, irritability and nervousness. These symptoms usually resolve after several days.

If you enjoy occasional alcohol anyway, it is becoming increasingly clear that light alcohol consumption can indeed be part of a healthy lifestyle.