ISSA Nutritionist Practice Exam

What is the most common ingredient found in thermogenic supplements?

1. Caffeine

2. Green tea extract

3. Protein

4. Sugar

The correct answer is: Caffeine

Caffeine is the most common ingredient found in thermogenic supplements due to its well-documented effects on metabolism. As a natural stimulant, caffeine increases energy expenditure and promotes fat oxidation, making it a popular choice for those looking to enhance their weight loss efforts. It acts by stimulating the central nervous system, leading to increased heart rate and improved physical performance, which can contribute to a higher calorie burn during workouts. The presence of caffeine in these supplements allows for an effective boost in energy levels, making it easier for individuals to engage in physical activities while also potentially enhancing their fat-burning capabilities. Other ingredients, like green tea extract, may also be present due to their thermogenic properties, but caffeine is typically the primary component concentrated on in these formulations. On the other hand, protein is generally aimed at muscle repair and growth, while sugar is counterproductive to weight loss goals, making them less common in thermogenic supplements.