If you’re a parent or grandparent, you may consider those plastic pouches of food your toddler sucks on contentedly while you drive down the road as the best invention ever. But Lincoln Park mom and baby food company founder Erica Bethe Levin is alarmed by a Greenpeace study finding as much as 11,000 microplastics in each pouch. As she tells WGN’s Steve Alexander in the audio clip above, her concern is that we don’t know what means in the long term for tiny bodies that are developing.

Her solution? Glass containers. Her baby food brand, GloBowl, founded six years ago in her kitchen when she despaired at the lack of variety and flavors in traditional baby food, has always been “canned” in jars. And, to be sure, she has a vested interest in promoting glass as she competes with the big food companies. But she says she is more concerned that our children’s health may be being sacrificed for cost and convenience.

The big food companies called out by the Greenpeace study, Nestle and Danone, claim otherwise. Danone emailed this response:

“Danone is aware of the report released by Greenpeace regarding the alleged presence of microplastics in certain baby food product pouches. We are united in our belief that babies deserve safe and nutritious food, and that more research is needed to help close key gaps around the impact of microplastics on our health. Happy Baby pouches are produced with strict quality and food safety standards and methods, in line with all FDA food safety guidelines and regulations. All Happy Baby pouch food products are safe.”

Nestle provided this response:

“We understand the concerns raised in this report and take them seriously. We want to reassure all consumers that our products are safe to consume. We apply strict controls across our manufacturing, including the rigorous selection and management of packaging materials. We understand and share concerns about microplastics.Microplastics are widely present in the environment and we understand and take these concerns seriously. Eliminating microplastics is a universal, global challenge. At Nestlé, we continuously monitor emerging science and regulatory guidelines, including on microplastics, to ensure our products meet all applicable food safety standards and regulatory requirements. Plastic food-grade packaging plays an essential role in protecting food and beverages, ensuring the food safety and quality of the product, and helping to prevent food waste. We take care when selecting our packaging materials based on our rigorous quality and safety standards and all applicable regulatory requirements.”