Daily dose of vitamin D 'can improve function in damaged hearts'

http://www.telegraph.co.uk/news/2016/04/05/daily-dose-of-vitamin-d-can-improve-function-in-damaged-hearts/?utm_source=dlvr.it&utm_medium=twitter

A daily dose of vitamin D can improve the blood-pumping performance of damaged hearts, a study has found.
Researchers studied 160 patients being treated for heart failure using a variety of proven drug treatments and pacemakers.
Participants who took a vitamin D3 supplement daily for one year experienced an improvement in heart function not seen in those given a dummy pill.