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Antioxidants May Mirror Alcohol’s Developmental Risks, Study Finds

Scientists from Texas A&M conducted a six‑week experiment feeding male mice high doses of two common antioxidants—N‑acetyl‑L‑cysteine and selenium. While the fathers appeared healthy, their offspring displayed notable changes in skull shape and eye spacing.

“Excess antioxidants can alter sperm DNA, potentially affecting how children grow,” the researchers note.

Key Findings

• Skull and Eye Changes: Male pups exhibited distinct skull shapes and altered eye spacing.
• Female Offspring More Affected: Smaller heads and closer‑set eyes—traits sometimes linked to fetal alcohol syndrome.
• Alcohol Comparison: High antioxidant doses produced developmental risks similar to those caused by oxidative stress from alcohol.

Practical Takeaway

• Balance is Crucial: A multivitamin providing 1,000 % of the recommended daily amount can be risky; staying within the standard 100 % range is safer.
• Caution for Prospective Parents: Men who regularly take high‑dose supplements should be mindful of potential impacts on future children.

“While antioxidants are often marketed as harmless boosters, very high doses can backfire and even reduce exercise benefits.”

The study, published in Frontiers in Cell and Developmental Biology, underscores that even “healthy” supplements can be harmful when overused, calling for further research into their effects on brain function.