There are two types of vitamins—water-soluble and fat-soluble. Water-soluble vitamins, which are highly soluble, require daily replenishment in your body. Fat-soluble vitamins, which are also essential for your health and stored in your liver, you do not need to replace every day.
Vitamins A, D, E, and K are fat-soluble, meaning that you must add dietary fat for your body to absorb those nutrients. So if you’re eating raspberries, spinach, and celery, great. However, to get the most out of foods rich in these fat-soluble vitamins, eat a little heart-healthy fat at the same time.
I read a review for a vitamin D product and the reviewer was ranting and raving because in the capsule they mixed the vitamin D with oils. I guess he didn’t know that it works better in oil because it doesn’t dissolve in water.
This is just another reason you need a balanced diet. You can’t eat a fat-free diet. I was on a diet one year that included some packaged powders that you mixed in a little water and drank it. The shakes didn’t taste that good and there was little to no fat. The administrator of the diet added the requirement to take a spoon full of olive oil every day.
So for optimum health you need to balance fat, carbohydrates and protein. The Flat Belly Diet by Liz Vaccariello has fats as an important item in the diets. She calls them MUFA’s, monounsaturated fatty acids such as found in olive oil, nuts, and avocados. In fact, I go back to her 4-day anti-bloat jumpstart diet to give my diet a little jumpstart. In fact, I’m doing that again starting today. She wants MUFA’s with each meal. That’s what’s up with me.