Vitamin D supplementation has been linked to numerous benefits from preventing rickets to improving immune function and cardiovascular health. While the function of vitamin D in bone growth and maintenance is clear the debate on its role in lowering the odds of developing respiratory tract infection has been going on. Different studies have yielded mixed results. One more study has further escalated the discussion. A five-year clinical trial led by Brisbane's QIMR Berghofer Medical Research Institute concluded that vitamin D supplements will not protect from catching colds flus and other respiratory infections. The trial involving 16000 Australians aged between 60