Unfortunately, there is no diet that will increase your heart s ejection fraction (an estimate of the muscle strength of your heart). Assuming you were diagnosed with a cardiomyopathy, there are some causes of dilated cardiomyopathy, such as postpartum (occurring after a woman gives birth) or certain viruses or heavy alcohol consumption or after a prolonged tachycardia (an arrhythmia that causes a very rapid pulse that goes untreated for more than several weeks). In some of these cases (approximately one-third of them), the heart s ejection fraction will return to normal spontaneously--on its own--for reasons that are poorly understood. Other than in stopping the consumption of alcohol for alcohol-induced cardiomyopathy, there is no dietary change that can improve one s ejection fraction (EF). Some people believe that antioxidant vitamins, such as Coenzyme Q-10, can help to heal a cardiomyopathy, and possibly improve the EF. There are no large-scale reliable studies that prove this, but it probably won t cause harm. Of course, managing the SYMPTOMS of low EF and of heart failure can be done by lowering the sodium (salt) intake in one s diet, and also by reducing or avoiding caffeine. They won t improve EF, but those alterations can decrease exacerbations of heart failure, hospitalizations, and accumulations of fluid retention. Good luck, and let us know if this information helps, or if you have other questions.