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August 25, 2025NutrientsOpen Access

Vitamin A Intake and Risk of Cancer Incidence: Insights from a Case–Control Study

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Case-control analysis reveals a U-shaped association between vitamin A intake and cancer incidence, suggesting optimal intake levels.

A U-shaped association highlights both low and high vitamin A intake increasing cancer risk significantly.
Participants included 3758 incident cancer cases and 2995 hospital controls, showing a crucial dietary link.
Case-control study design revealed that both extremes of vitamin A intake correlated with higher cancer risks.
Understanding this relationship may help refine dietary guidelines, with implications for prevention strategies.

Ikeda et al. (2025) studied this question.

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