Hidden Pesticides: Which Vegetables Are the Worst Offenders?

11. Onions: A Pungent Layer of Protection

Onions might seem safe due to their papery outer layers, but they're not entirely immune to pesticide use. Farmers apply insecticides to combat onion thrips and herbicides to control weeds. While the outer skin is typically peeled, some chemicals, particularly systemic ones, can be absorbed into the bulb itself. The good news is that onions have some natural defenses, but it's still worth noting. Choose organic onions when you can, and always peel off a few extra layers to ensure you’re getting to the cleanest part of the bulb.

12. Kiwi: The Fuzzy Fruit with a Chemical Core

Kiwi's fuzzy brown skin gives the illusion of protection, but beneath that exterior lies a fruit often treated with fungicides and insecticides. Like other fruits with thin, edible skins, kiwis are susceptible to pests and diseases that require chemical intervention. Because the skin is often consumed, especially in organic varieties, the risk of residue exposure is a concern. To enjoy kiwi safely, wash the fruit thoroughly or simply scoop out the flesh.