Articles by Tasha Stoiber, Ph.D., David Andrews, Ph.D.

Natural and artificial flavor: What's the difference?

If you’ve studied ingredient labels and been mystified by “natural flavor” and “artificial flavor,” you’re not alone. These vague terms suggest a big gap in quality, but the reality is more complex...

EWG comments on California DTSC's 2025 microplastics in consumer products research

Attached are EWG’s comments in support of the California Department of Toxic Substances Control’s 2025 microplastics in consumer products research.

‘Forever chemicals’ in drinking water: How exposure can impact infant health

Exposure through drinking water to the toxic “ forever chemicals ” known as PFAS can harm infant health before birth, a recent study finds . The risks of exposure can include premature birth, low...

Ditching older furniture can cut your exposure to some harmful flame retardants

Foam-containing furniture sitting in your home for years can be a hidden source of harmful flame retardant exposure. Removing these old sofas and chairs can lower the amount of one type of flame...

Why an effective water filter matters for your home

Using a home drinking water filter is one of the most effective ways to reduce exposure to harmful contaminants, from the “ forever chemicals ” known as PFAS to arsenic, lead and more. Tap water...

PFAS in drinking water: What you need to know

The Environmental Protection Agency is moving to weaken national drinking water limits on the toxic “ forever chemicals ” known as PFAS. You may be asking: With federal safeguards at risk, how can I...

EWG map supports ‘co-contaminant’ tap water rules for preventing up to 50,000 cancer cases

Regulating and treating multiple drinking water contaminants as groups, instead of the standard method of targeting one at a time, would significantly benefit public health.

EWG comments to California DTSC to reiterate support on proposed inclusion of microplastics to the Candidate Chemicals List

Attached are EWG's submitted comments to the California Department of Toxic Substances Control to confirm continued support for the listing of microplastics to the state agency's Candidate Chemicals...

How to buy a mattress without toxic chemicals

How hard can it be to buy a mattress? The answer: There’s more to consider with this big ticket consumer item than you might suspect – including your health. A mattress is a purchase you may make only...

Mattress chemicals you could be sleeping on

On average, Americans spend almost nine hours a day sleeping – a huge amount of time. When you also factor in time just relaxing in bed, maybe reading or scrolling on a phone, it adds up to a...

EWG comments to California DTSC on proposed inclusion of microplastics to the Candidate Chemical List

Attached are EWG submitted comments to the California Department of Toxic Substances Control supporting the listing of microplastics to the state agency's Candidate Chemical List.

Popular sweetener erythritol, found in Truvia, linked to heart risk, new study says

A new study finds a link between erythritol – a common artificial sweetener also used as a filler in stevia and monk fruit sweeteners and some keto products – and risk of harm to the heart and blood...

Fiberglass: A new hidden hazard in mattresses

Fiberglass is now being used as a replacement for harmful chemical flame retardants in some mattresses, according to a new study. But it can also pose its own risks.

EWG comments California OEHHA on public health goals for PFOA and PFOS in drinking water

The Environmental Working Group, along with 19 environmental and public health organizations, submitted comments to California's Office of Environmental Health Hazard Assessment in support of the...

EWG comments for the NEJAC public meeting

The Environmental Working Group submitted comments for the August 18-19, 2021, meeting of the National Environmental Justice Advisory Council.

EWG comments to California OEHHA on the new version of EnviroScreen

EWG submitted comments to California's Office of Environmental Health Hazard Assessment in support of the revisions of the new draft version of CalEnviroScreen and applauds the agency's efforts to...

California agency acknowledges synthetic food dyes’ link to hyperactivity and behavioral problems in kids

Foods containing synthetic food dyes make children vulnerable to hyperactivity and other behavioral problems, according to a new report by California state scientists.

Leftover Trump EPA rule leaves millions at risk from lead-tainted tap water

Civil rights and environmental groups are urging the Biden administration to delay implementation of a Trump-era rule that would leave millions of Americans exposed to toxic lead in drinking water.

Common drinking water contaminant linked to spike in Parkinson’s disease

A common chemical used in dry cleaning, carpet cleaners, shoe polish and industrial processes that contaminates the drinking water supply for millions of people could contribute to an explosion in the...

EWG Comments to EPA's National Environmental Justice Advisory Council on Water Quality Concerns

The Environmental Working Group submitted comments to urge the EPA’s National Environmental Justice Advisory Council to focus on drinking water quality concerns in overburdened communities across the...