Independent test finds arsenic, lead and pesticide residues in 77 breakfast cereals

Clean Label Project's analysis of 77 cereals found rice-based products carried far more arsenic, nearly every cereal contained acrylamide and chocolate varieties often had detectable lead. The group also named four cereals to its 2026 Back-to-School Honor Roll for lower contaminant levels and stronger nutrition profiles.

Why it matters: - Breakfast cereals are a daily staple for many families, so contaminant levels can affect routine exposure to heavy metals, pesticides and industrial residues. - The results show that a cereal’s nutrition profile and its contaminant profile do not always move in the same direction. - The findings may help parents compare products beyond sugar, protein and fiber.

What happened: - Clean Label Project released an independent laboratory analysis of 77 breakfast cereals on Aug. 18, 2026. - The sample included national brands, store brands and products marketed as natural, organic or nutritious. - The nonprofit tested for arsenic, lead, acrylamide, glyphosate and other pesticide residues.

The details: - Rice-based cereals contained 12 times more arsenic per serving than the rest of the category tested. - All but one cereal contained acrylamide. - Acrylamide levels varied by as much as 21-fold between products. - Cereals made with wheat or oats contained about 2.5 times more acrylamide per serving than cereals made with rice or corn. - Of 13 cereals containing chocolate, cocoa or cacao, 12 had detectable lead. - Those chocolate, cocoa or cacao cereals had average lead levels more than double the levels found in cereals without those ingredients. - Four products accounted for 81% of all glyphosate detected across the category. - Additional pesticide residues found included chlormequat, methoxyfenozide, acetamiprid and metalaxyl. - No BPA or BPS was detected in any product tested. - Clean Label Project said that marked improvement compared with its 2018-2019 cereal evaluation. - The Honor Roll evaluation also weighed ingredient quality and nutrition, including sugar, protein, fiber and the presence or absence of seed oils, artificial colors, artificial flavors, artificial sweeteners and synthetic preservatives.

Between the lines: - The results suggest some plant-based ingredients may raise exposure to heavy metals from soil and pesticide use in farming. - The data also show that products with the weakest nutrition profiles sometimes had lower contaminant levels overall. - Clean Label Project framed the issue as a choice many shoppers should not have to make between nutrition and lower contaminant exposure. - The analysis was designed as a category-wide snapshot, not just a few spot checks.

What's next: - Clean Label Project published the full testing results and its 2026 Back-to-School Report Card on cleanlabelproject.org. - The group will likely use the findings to push manufacturers to improve both ingredient quality and contaminant levels. - Families can use the report card and Honor Roll to compare cereals ahead of the school year.

The bottom line: - The study finds that some cereals combine better nutrition with lower contamination, but many products still carry measurable levels of arsenic, lead, acrylamide or pesticide residues.