FiTOUR Primary Nutrition Certificate Practice Test 2026 - Free Nutrition Practice Questions and Study Guide

Vitamin B1, also known as thiamine, plays a crucial role as a coenzyme in various metabolic processes, particularly those related to carbohydrate metabolism. It is essential for the conversion of carbohydrates into energy, specifically in the decarboxylation of alpha-keto acids, which is vital for the Krebs cycle—an important energy-producing pathway in the body. Since carbohydrates are a primary source of energy for many bodily functions, Vitamin B1 is critical in ensuring efficient energy production from dietary sources.

While other vitamins and nutrients may have roles in water absorption, antioxidant properties, or bone health, these functions are not attributed to Vitamin B1. Therefore, its primary function centers on supporting energy metabolism, making the understanding of its role in sugar formation and overall metabolism vital for a comprehensive approach to nutrition and health.