NANP Board Practice Exam

Which nutrient is considered essential due to the body not being able to synthesize it?

1. Carbohydrates

2. Fiber

3. Omega-3 fatty acids

4. Proteins

The correct answer is: Carbohydrates

The correct answer is omega-3 fatty acids. These are classified as essential fatty acids because the body cannot synthesize them. The human body requires omega-3s for various critical functions, including cellular structure, brain health, and regulation of inflammation. Since the body cannot produce them, they must be obtained through diet, primarily from sources such as fish, flaxseeds, and walnuts. Carbohydrates, while essential for energy, can be synthesized by the body from proteins and fats. Fiber, although important for digestive health, is not classified as essential because the body does not require it for survival, and sufficient nutrition can be achieved without it. Proteins are made up of amino acids, some of which are essential and must be obtained from food, but proteins as a whole are not considered one specific nutrient that cannot be synthesized.