How do phytochemicals benefit human health?

Phytochemicals are compounds found in plants that have been shown to offer various health benefits, particularly through their antioxidant properties. Antioxidants help neutralize free radicals in the body, which can damage cells and lead to chronic diseases such as heart disease, diabetes, and cancer. By protecting against oxidative stress, phytochemicals contribute to the prevention of these conditions, making option C the accurate choice.

Additionally, many phytochemicals possess anti-inflammatory, immune-boosting, and even antimicrobial properties, further supporting overall health. Their presence in a balanced diet, often obtained through a variety of fruits, vegetables, whole grains, and legumes, emphasizes the importance of these compounds in promoting long-term well-being and disease prevention.

The other options do not highlight these critical health benefits. While phytochemicals can enhance flavor in food, that aspect alone does not encapsulate their significance in nutrition and health. Also, they are not primarily sources of energy; instead, they play complementary roles alongside macronutrients. Lastly, suggesting phytochemicals are unnecessary once a balanced diet is achieved overlooks their specific health-promoting capabilities that go beyond basic nutrition.