Adding a little more of the 'sunshine vitamin' to a low-calorie diet could speed up weight-loss efforts. A study conducted by the University of Milan found that participants who supplemented with 100,000 IU of vitamin D per month, whilst adhering to low-calorie diets, lost more weight and had slimmer waistlines than those who didn’t supplement.

Researchers note that the results seemed to be most effective in those with a vitamin-D deficiency; but when considering that 40 percent of adults in North America are believed to be deficient, the vitamin could very well be the missing weight-loss link for a number of people. Other than supplementing or soaking up a little more sunshine, vitamin D can also be consumed through eggs, milk, yogurt, tuna, salmon, cereal and orange juice.

What’s your take on this new research about the sunshine vitamin? What are ways to ensure you’re getting an adequate amount of it? Let us know in the comments below.