An individual's diet lacks sufficient niacin (Vitamin B3), leading to a disruption in the tryptophan metabolism pathway. Which outcome becomes increasingly likely?

💡 Explanation

Niacin is a precursor for NAD+, a crucial coenzyme in metabolic pathways. A deficiency leads to reduced NAD+ synthesis because the body lacks the necessary building blocks. Therefore, decreased NAD+ production rate is likely, rather than increased calcium absorption.

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