Heavy Metals in Infant Oatmeal: How It Compares to Rice Cereal

For years, rice cereal was the standard first food. Now many parents reach for oatmeal instead, often because they have heard that rice cereal is high in arsenic. That is a reasonable swap, but it helps to know what it does and does not change.

Why rice cereal gets attention

Rice absorbs more arsenic from soil and water than other grains, including the inorganic form that is most harmful. That is why FDA set an action level of 100 parts per billion for inorganic arsenic in infant rice cereal in 2020, one of the first heavy metal limits for baby food. FDA's rice cereal guidance.

In Healthy Babies Bright Futures' 2019 testing, four of the seven infant rice cereals tested exceeded that level, which was still a proposal at the time.

How oatmeal compares

Oatmeal is generally lower in arsenic than rice cereal, which is why pediatric groups suggest it as an alternative. HBBF recommends iron-fortified oatmeal or multigrain cereal over rice cereal for that reason.

But oatmeal is not metal-free. In HBBF's 2019 testing, all 11 non-rice infant cereals had detectable arsenic and cadmium, and most had lead. And oat-ring cereal (the O-shaped kind) was on HBBF's 2022 list of the ten most contaminated foods babies eat.

The takeaway: oatmeal is a good swap for rice cereal, not a reason to serve one grain every day.

What FDA limits cover

In January 2025, FDA finalized a lead action level of 20 ppb for dry infant cereals, including oatmeal, rice, and multigrain cereals. Together with the arsenic level for rice cereal, that means infant cereals have more federal guidance than most other baby foods. FDA's lead guidance.

Action levels are enforcement thresholds. They are not a line between safe and unsafe.

How to rotate infant cereals

The American Academy of Pediatrics says rice cereal does not need to be the first or only cereal. It suggests:

• Rotating grains: oatmeal, barley, quinoa, and multigrain cereals.
• Choosing iron-fortified cereals. Many babies need extra iron between 6 and 12 months, and good iron levels also help limit how much lead the body absorbs.
• Offering a variety of foods overall, so cereal is one part of a varied diet.

AAP tips on heavy metals in baby food.

Checking a specific cereal

Infant cereals sold in California must be tested for arsenic, cadmium, lead, and mercury, with results posted online and usually linked from a QR code on the box. Some cereals also carry the Heavy Metal Certified mark, which means that product was tested through an independent laboratory and met a published standard for eight metals, with retesting every year. The mark does not mean a cereal is free of metals. What the mark means.

FAQ

Is oatmeal cereal lower in arsenic than rice cereal? Generally yes, which is why pediatric groups suggest it as an alternative. It still contains trace metals, so rotating grains is best.

Should I stop using rice cereal completely? You do not have to. The AAP says rice cereal does not need to be the first or only cereal. Rotating it with other grains lowers exposure.

Is organic oatmeal lower in heavy metals? Not reliably. Organic rules cover farming practices, not heavy metals.

Does FDA limit heavy metals in infant cereal? Yes. FDA has a 100 ppb action level for inorganic arsenic in infant rice cereal and a 20 ppb lead action level for dry infant cereals.

Learn more

• Heavy metals in puffs and teething rusks
• FDA's Closer to Zero plan explained
• What Heavy Metal Tested certification is

Make infant cereal? Book a 30-minute call about certification.