In the context of finding credible nutrition information, which option best defines a fad diet?

• A. A balanced eating pattern supported by strong scientific research and intended for long-term health
• B. A dietary pattern that emphasizes variety, moderation, and adequacy across all food groups
• C. A medically prescribed diet therapy designed to manage a specific disease under professional supervision
• D. An eating plan that promises quick, dramatic results and is often based on limited or questionable evidence

Answer: (D)

Verified step by step guidance

1. Step 1: Understand the concept of a fad diet. A fad diet is typically characterized by promises of rapid weight loss or dramatic health improvements without strong scientific backing.
2. Step 2: Recognize that fad diets often rely on limited, anecdotal, or questionable evidence rather than well-established nutritional science.
3. Step 3: Compare the options given: balanced eating patterns and medically prescribed diets are supported by research or professional guidance, which distinguishes them from fad diets.
4. Step 4: Identify that the key feature of a fad diet is its focus on quick results and often restrictive or unbalanced approaches that are not sustainable long-term.
5. Step 5: Conclude that the best definition of a fad diet is an eating plan promising quick, dramatic results based on limited or questionable evidence.