Does diet affect how many microplastics school-age children are exposed to?

What's actually in it

Microplastics enter food from packaging, processing, and the environment. Packaged snacks, bottled drinks, instant meals, and foods wrapped in plastic carry higher microplastic loads. Fresh fruits, vegetables, and home-prepared foods from non-plastic containers have much lower levels.

Children eat proportionally more food relative to their body weight than adults, so their microplastic intake per kilogram of body weight is higher. A child who drinks bottled water and eats a lot of packaged food every day takes in significantly more microplastics than one who eats fresh food and drinks filtered tap water.

What the research says

A 2026 study on microplastic exposure and dietary patterns in school-aged children found that diet quality directly predicted microplastic intake. Children eating more packaged and processed foods had measurably higher microplastic exposure markers than peers with fresh-food-forward diets.

The highest-risk dietary sources for children include: bottled water (particles from the bottle and cap), packaged snacks in crinkly plastic film, and foods that are processed in plastic-heavy equipment. Canned foods with plastic-coated linings are another underappreciated source.

Switching to fresh food, tap water filtered through a reverse osmosis system, and glass or stainless containers for drinks and snacks makes a measurable difference in children's daily microplastic intake.