You literally are what you eat. Every atom, every molecule, every cell, tissue, organ, and system in your body is made up of the ingredients in the foods you eat, the water you drink, and the air you breathe. There are 40+ nutrients and close to a million phytonutrients in foods that your body and brain can’t make by itself, but require to function in tip-top shape. The amount and balance of those thousands of nutrients determines whether you are happy or sad, smart or forgetful, energetic or lethargic, healthy or diseased, living vibrantly or dragging through the day.
Put another way, just like cars are built on an assembly line with engines designed to run on gasoline, our bodies were built on an evolutionary assembly line designed to run on real foods. You wouldn’t dream of putting sawdust into your gas tank. Yet, putting the nutritional equivalent of sawdust into your body has the same effect. Eat junk and you’ll feel like junk. Eat right and you will be amazed how good you can feel. I can’t tell you how many times people have taken the advice I layout in Eat Your Way to Happiness and come back to me saying, “I never knew I could feel this good!!”