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.
Different nutrients are grouped together based on similarities in function. There six major classes of nutrients. Carbohydrates are your bodyâs main source of energy. Carbohydrates contain the simple sugar glucose, which supplies energy to your brain, muscles and nervous system. Carbohydrates are referred to as macronutrients for two reasons: your body needs them in large amounts and they provide calories â 4 per gram.