Beside racking up a higher calorie count, the group that produced more males were also more likely to have eaten a wider range of nutrients, including potassium, calcium and vitamins C, E and B12.

• 产男胎的那一组孕妇，除了摄入更多的热量外，还更有可能摄入了更多其它的营养素，比如，钾、钙和维生素C、E和B12等。