Vitamin A consumption becomes harmful above specific quantitative thresholds relative to the RDI
the verdict
OVERSTATED
true in a weaker form than the claim states
confidence 0/100
Evidence from multiple experimental studies confirms that excessive vitamin A consumption above recommended intake levels results in toxicity, metabolic disruption, and adverse physiological effects.
what the evidence does support
Excessive vitamin A consumption above recommended intake levels causes toxicity and physiological disruption in animal models.
Evidence for · 3
Vitamin D Maintains Growth and Bone Mineral Density against a Background of Severe Vitamin A Deficiency and Moderate Toxicity in a Swine Model.
2024 · cited by 2
Paper [1] demonstrates that excessive vitamin A intake leads to moderate toxicity and altered physiological parameters in an animal model.
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More for · 2
Supraphysiological Doses of Vitamin A Promote Changes in Hippocampal Oscillation Bands and Cardiac Activity in Wistar Rats.
2026 · cited by 0
Paper [9] shows that supraphysiological doses of vitamin A disrupt neurocardiac and electrophysiological homeostasis in rats.
Perinatal vitamin A excess impacts vitamin A and lipid metabolism in rat offspring.
2025 · cited by 0
Paper [11] establishes that vitamin A overexposure during perinatal development detrimentally impacts lipid and vitamin A metabolism.