Journals

Does olive oil carry lead or other metals? What studies found, where metals come from, how the container matters, and what a purity test can't tell you.

Cats vs. dogs and heavy metals in pet food: what studies that tested both found, why body size and fish-heavy diets matter, and what to ask.

Cadmium and kidney health in cats: what studies in cats have found, what they cannot tell us yet, and questions worth asking your vet.

Heavy metals in dog food: what studies have found, why protein source and raw game diets matter, and what to ask before you buy.

Heavy metals reach cat food through soil, water, sea ingredients, and processing. See where they come from, who monitors them, and what to ask.

Lead, arsenic, and mercury in cat food: how each can affect cats, where each tends to come from, and what research does and doesn't show yet.

Is iron a heavy metal? Is lead? See which metals your body needs, which have no useful role, and why the difference matters when food is tested.

Wondering about heavy metals in cat food? Use this 5-minute check, learn what to ask your cat food brand, and know when to talk to your vet.

The steps a product goes through before it can carry the Heavy Metal Certified mark, and what each step tells you as a shopper.

How children's supplements are regulated, what a certification mark tells you, and practical steps before you buy gummies or vitamins.

What it means when a baby food product goes over an FDA action level or misses a certification standard, and the practical steps that matter.

What FDA and pediatric groups say about juice, why whole fruit is the better default, and practical steps if you still serve it.

Testing shows the food on the spoon matters more than who made it. Here is what actually lowers your baby's exposure.

What the mark tells you about the product in your cart, what it does not, and how to check it.

What Consumer Reports found when it tested baby food for heavy metals, and how a one-time news test differs from a certification seal.