Is it safe to eat sodium benzoate-preserved drinks if you're trying to conceive?

What's actually in it

Sodium benzoate (E211) is added to sodas, fruit juices, salad dressings, and pickles to prevent microbial growth. At low doses it's considered GRAS (generally recognized as safe). Recent reproductive toxicity studies suggest the GRAS designation may not reflect modern reality. The combination with ascorbic acid (vitamin C) that's common in soft drinks also produces small amounts of benzene, a carcinogen.

For someone trying to conceive, daily intake of benzoate-preserved drinks is a modifiable risk.

What the research says

A 2026 study in Regul Toxicol Pharmacol showed sodium benzoate induces reproductive toxicity via hormonal disruption, ovarian damage, and altering kisspeptin/RFRP-3 expression. The kisspeptin pathway regulates the reproductive hormonal axis. Damage here affects ovulation regularity and egg quality.

For the three months before trying to conceive, check labels for "sodium benzoate," "potassium benzoate," or "E211" on drink ingredient lists. Skip products that contain them. Sparkling water with a splash of real fruit juice replaces sodas. Home-made salad dressing with olive oil and lemon replaces bottled dressing. Small changes during the conception window translate to cleaner egg and sperm quality.