Health Claims

Pregnant women who have a certain gene variation might have babies with higher birth weights if they’re exposed to more propyl paraben, a chemical found in some personal care products.

Pregnant women who can't clear certain chemicals well due to their genes might have bigger babies if they're exposed to more methyl paraben, a common ingredient in personal care products.

If a mom is exposed to certain chemicals at work during pregnancy, her child might score lower on reasoning tests by age 5 — but we’re not totally sure yet.

If a mom is exposed to certain workplace chemicals during pregnancy, her child might score lower on thinking and learning tests by age 5—especially if she’s exposed to more than one type of these chemicals.

If a mom works with certain chemicals like solvents during pregnancy, her child might score lower on reasoning tests by age 5.

Some studies say BPA might affect kids' behavior, but the results aren't strong or consistent enough to say for sure.

We don't have strong proof yet that BPA affects ADHD symptoms in kids, because the studies done so far aren't very reliable.

There's no strong proof that kids getting exposed to BPA leads to ADHD or behavior issues — the studies we have so far don't agree, and many aren't very reliable.

Boys and girls react differently to mom's exposure to certain chemicals during pregnancy when it comes to early signs of ADHD. Girls seem to have fewer symptoms linked to some lighter chemicals, while boys show a slight increase in symptoms with heavier ones, though it's not strong.

If a mom is exposed to certain chemicals during pregnancy, her son might show slightly more ADHD-like behaviors by age 2 to 4, but the link isn’t strong enough to be sure — and it doesn’t seem to affect girls the same way.

If pregnant moms have more of a certain chemical called MCPP in their urine, their kids might have fewer ADHD-like behaviors by ages 2 to 4 — especially if the child is a girl.

Kids in Taiwan between 4 and 15 years old who are exposed to more chemicals that mess with hormones and have signs of body stress are much more likely to have ADHD — about 3.8 times more likely if their exposure is the highest.

Kids in Taiwan between 4 and 15 years old who have more of a certain pesticide chemical in their pee are much more likely to have ADHD — especially those with the highest levels, who are over 4 times more likely to have it.

Kids in Taiwan between 4 and 15 years old with higher levels of a certain chemical in their pee—linked to body stress from oxidation—were more likely to have ADHD. Those with the highest levels were nearly 4 times as likely to have ADHD compared to others.

Girls exposed to PFAS chemicals might actually have a lower chance of being diagnosed with ADHD, which is surprising because these chemicals are usually seen as harmful.

Boys might be more likely to develop ADHD if they're exposed to certain chemicals found in plastics and pollution, like BPA, phthalates, and PAHs.

Kids who are exposed to certain chemicals in plastics might be more likely to have ADHD, according to a review of studies — but we can't say for sure that the chemicals cause it.

Kids with a rare condition called Bardet-Biedl syndrome often don’t grow as tall as other kids their age.

Kids who are exposed to certain harmful chemicals in the environment might be more likely to develop ADHD.

Kids who are exposed to certain chemicals in the environment might become more hyperactive.

Kids who are exposed to certain harmful chemicals in the environment might have a harder time controlling their impulses or stopping themselves from doing something they shouldn't.

Chemicals that mess with hormones might be harming kids' brain development.

Taking NMN might help slow aging because it boosts a molecule called NAD in your blood, but we don’t actually know yet if it truly slows aging — right now it’s just based on a possible clue from blood tests.

Taking NMN supplements every day for up to 12 weeks doesn’t seem to cause serious side effects in healthy adults — most people only feel minor issues, if any.