A recent study has found that daily vitamin D3 supplementation can improve heart function in people with chronic heart failure.
In the study, researchers gave one group of patients 4000IU of daily vitamin D, and gave the other group a placebo. They found that those who took a daily vitamin D supplement showed improvement in cardiac function while those who took the placebo showed no improvement. 
The study involved over 160 patients who were already being treated for chronic heart failure using treatments such as beta-blockers, ACE-inhibitors and pacemakers. Chronic heart failure occurs when the heart is unable to pump enough oxygen-rich blood around the body to support other organs. Around 50% of people diagnosed with the condition die within 5 years of diagnosis. This study was presented at the American College of Cardiology 65th Annual Scientific Session & Expo, in April 2016.
Vitamin D is not only known to have bone strengthening effects by helping the body deposit calcium in the bones, but it also plays an important role in immune function, emotional health, insulin release and aging. Patients with cancer, osteoporosis, depression, autoimmune conditions, premature aging and diabetes often have a vitamin D deficiency.
Click here to read more about vitamin D deficiency.
SOURCE: http://www.medicalnewstoday.com/articles/308638.php
Dr. Ardyce Yik ND 