Our energy intake is important and our energy expenditure is important. 90% of the US population isn't consuming enough choline, vitamin D, and most people aren't getting enough vitamin E, vitamin K, magnesium, vitamin A, vitamin C, and calcium. There are 13 essential vitamins and 16 essential minerals that we have to get through food. If we don't have enough of these nutrients, this can interfere with certain processes working the way that we'd like for them to work.