Final answer:
Empirical evidence is the best source of information about a health product.
Step-by-step explanation:
The best source of information about a health product is empirical evidence. Empirical evidence refers to information that is based on observation, experiments, or real-life experiences. It provides objective and reliable information about the effectiveness and safety of a health product. In contrast, advertisements, celebrity endorsers, and company websites may be biased and designed to promote the product rather than provide accurate information.
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