For example, some ingredients may be safe in products such as cleansers that we wash off the skin immediately, but not in products that we leave on the skin for hours. Similarly, ingredients that are safe for use on the hair or nails may be unsafe when used on the skin or near the eyes.
Carbohydrates are the main energy source for the brain. Without carbohydrates, the body could not function properly. Sources include fruits, breads and grains, starchy vegetables and sugars. Make at least half of the grains you consume whole grains.
Your body looks at carbohydrates as fuel, so one of the main functions of carbohydrates is supplying energy to the body. Your brain is particularly in need of the simple carbohydrate glucose as an energy source. So supplying energy to the brain is another important function. We also see that having enough carbs for energy can prevent the breakdown of proteins for energy.