Endocrine-active — how we score

The Endocrine‑active category is how NordicScan's method flags ingredients that recognised authorities or peer‑reviewed research have associated with endocrine (hormone‑system) activity. It is one of the nine evidence categories behind a product's concern score. This page explains what the category looks at, the sources behind it, and what the score does and does not claim.

A flag in this category means an ingredient our method associates with endocrine activity is present — for your research. It is an evidence‑and‑authority signal, framed as an association. It is not a safety verdict, not a claim that your hormones are affected, and not medical advice.

What this category looks at

• Cosmetic. This is where the category is most relevant, because of the exposure route: leave‑on products, fragrance components, certain parabens, some UV filters, and phthalate‑type ingredients that research or regulators have associated with endocrine activity.
• Food (ingestion). Contact residues, certain additives and contaminants, and some phytoactive ingredients.

Because exposure route matters so much here, the same ingredient can carry a materially different signal in a leave‑on cosmetic than in a food — and the method rates the two contexts separately.

The evidence and sources we weight

Per the source hierarchy, this category weights authority assessments first — for example the EU Scientific Committee on Consumer Safety (SCCS) opinions, EU restrictions on specific cosmetic ingredients, and endocrine‑disruptor candidate evaluations — and then the peer‑reviewed endocrinology literature. Each ingredient‑level flag cites the specific source that supports it, and an authority restriction is quoted as that authority's own classification, not restated as our verdict.

The words we use

Every statement is matched to its evidence tier:

• A research finding is a correlation — "associated with endocrine activity in [study type]", named as an association, with route and population carried.
• An authority action is an authority / regulatory signal — "[authority] restricts this ingredient in cosmetics, for [route / jurisdiction / date]", attributed verbatim.

A specific named hormone‑related outcome is only ever rendered inside a fully framed, sourced, disclaimed statement — never as a bare label, and never as causation. We do not say a product disrupts your hormones or affects your endocrine system.

What the score does — and does not — claim

• It does flag ingredients that authorities or credible research associate with endocrine activity, so you can research them yourself.
• It does not assess anything about your health, predict an effect on your hormones, or attribute an endocrine outcome to a product.
• Where route‑relevant severe evidence exists, this category can block a top band — an ingredient carrying such a signal can never render as "Excellent" (see the hazard rule).

Related method pages

• How we score — the full method
• Allergens & sensitivities · Digestive · Neurological & behavioural · Metabolic · Carcinogenicity signals · Cardiovascular · Skin (dermal) · Nutrition & positives

Disclaimer

Nordic Scan provides ingredient information and a concern score under our published method, for general consumer research. It is not medical advice and not a medical device, and does not diagnose, treat, cure, or prevent any disease, or determine the safety of any product. Decide for yourself.

NordicScan is operated by The Fred Group, Inc. (d/b/a NordicScan). See how we score for the full method.