{"hq_id":"hq-p-fod-000035","name":"Plant-Based Protein Powders (Pea, Hemp, Brown Rice — Heavy Metal Contamination)","category":{"primary":"food_contact","secondary":"","tags":[]},"product_tier":"FOD","overall_risk_level":"low","description":"A health-conscious consumer purchases plant-based protein powder marketed as 'clean,' 'natural,' and 'healthy.' Consumer Reports testing found cadmium, lead, arsenic, and mercury in all plant-based protein powders tested. Consuming 3 servings per day of some products exceeds the provisional tolerable daily intake for cadmium.","synthesis":{"derived_risk_level":"severe","synthesis_confidence":0.744,"synthesis_method":"compound_composition","context_used":"human_child","context_source":"product_users","exposure_modifier":1.173,"vulnerability_escalated":false,"escalation_reason":null,"compounds_resolved":1,"compounds_total":1,"synthesis_date":"2026-05-09","synthesis_version":"1.2.0","methodology_note":"exposure_modifier and adjusted_magnitude are computed from ALETHEIA-calibrated heuristics (route × duration × frequency multipliers, clamped to [0.5, 1.4]). Multipliers are directionally informed by EPA Exposure Factors Handbook (2011) and CalEPA OEHHA but are not regulatory consensus. See /api/methodology for full disclosure."},"hazard_summary":{"critical_concern":"Consumer Reports 2018 testing: plant-based protein powders (pea, hemp, brown rice) contain cadmium, lead, arsenic, and mercury at concerning levels. Brown rice protein: arsenic accumulation same pathway as rice cereal (rice bioaccumulates arsenic from soil). Pea protein: cadmium from soil. 3 servings/day of some brands = cadmium above provisional tolerable intake. No FDA heavy metal limits for protein powders. Marketing as 'clean' and 'healthy' alternative to whey omits heavy metal contamination disclosure.","key_hazards":["Heavy metal contamination in all plant-based protein powders tested (100% detection)","Brown rice protein — arsenic accumulation; 3 servings/day = above provisional tolerable intake for some products","Pea protein — cadmium from soil bioaccumulation","No FDA heavy metal limits for dietary supplements/protein powders","Marketing as 'clean/healthy' without heavy metal testing or disclosure"],"overall_risk":"low","primary_concerns":[],"sensitive_populations":"","exposure_routes":""},"exposure":{"routes":["dermal"],"contact_types":["oral_indirect","ingestion"],"users":["adult","child","pregnant"],"duration":"minutes","frequency":"daily","scenarios":["Incidental mouthing or hand-to-mouth transfer by children","Exposure during pregnancy with potential fetal transfer"],"notes":"Exposure to Plant-Based Protein Powders (Pea, Hemp, Brown Rice — Heavy Metal Contamination) occurs via dermal. Children and infants face higher exposure per body weight due to developing detoxification systems, higher surface-area-to-weight ratio, and behavioral factors (mouthing, crawling). Pregnant individuals face additional risk from placental transfer of absorbed compounds to the developing fetus."},"consumer_guidance":{"red_flags":[{"indicator":"Identified safety concern","meaning":"Consumer Reports 2018 testing: plant-based protein powders (pea, hemp, brown rice) contain cadmium, lead, arsenic, and mercury at concerning levels.","action":"Review safety data; follow use guidelines; consider alternatives"}],"green_flags":[{"indicator":"Third-party tested for contaminants","meaning":"Independent lab verification of safety claims","verification":"Look for NSF, FDA, or EU compliance certification"}],"what_to_ask":[{"question":"What materials are in direct contact with food?","why_it_matters":"Migration of chemicals from packaging or cookware into food depends on the contact material, temperature, and duration"}],"alternatives":[{"name":"Whey or Casein Protein Powder","notes":"Dairy-based proteins typically have lower heavy metal accumulation than plant sources"},{"name":"Spirulina or Chlorella Supplements","notes":"Microalgae with similar nutrients; select cultivated freshwater sources with testing"},{"name":"Whole Food Protein Sources","notes":"Legumes, nuts, seeds, and grains in whole form generally lower heavy metal exposure"}],"notes":null},"regulatory":{"applicable_regulations":[{"jurisdiction":"USA","regulation":"FDA 21 CFR Parts 170–189 (Food Contact Substances)","citation":null,"requirements":"All food-contact materials must comply with FDA regulations for indirect food additives. Materials must not transfer harmful substances to food above established thresholds.","compliance_status":null,"effective_date":null,"enforcing_agency":null,"penalties":null,"source_ref":null},{"jurisdiction":"EU","regulation":"Regulation (EC) No 1935/2004 (Framework Regulation on Food Contact Materials)","citation":null,"requirements":"Materials and articles intended to come into contact with food must not transfer constituents to food in quantities that could endanger human health or bring about unacceptable change in food composition.","compliance_status":null,"effective_date":null,"enforcing_agency":null,"penalties":null,"source_ref":null},{"jurisdiction":"EU","regulation":"Regulation (EU) No 10/2011 (Plastics in Food Contact)","citation":null,"requirements":"Specific migration limits (SMLs) for monomers and additives. Overall migration limit: 10 mg/dm² or 60 mg/kg food. Positive list of authorized substances.","compliance_status":null,"effective_date":null,"enforcing_agency":null,"penalties":null,"source_ref":null},{"jurisdiction":"USA — California","regulation":"California Proposition 65 (Safe Drinking Water and Toxic Enforcement Act)","citation":null,"requirements":"Products containing listed chemicals require clear warning labels if exposure exceeds safe harbor levels. Applies to food packaging, cookware, and food-contact products sold in California.","compliance_status":null,"effective_date":null,"enforcing_agency":null,"penalties":null,"source_ref":null},{"jurisdiction":"USA","regulation":"EPA Lead Renovation, Repair and Painting Rule (RRP, 40 CFR Part 745)","citation":null,"requirements":"Lead-safe work practices required for renovation of pre-1978 housing and child-occupied facilities. EPA-certified renovator required.","compliance_status":null,"effective_date":null,"enforcing_agency":null,"penalties":null,"source_ref":null}],"certifications":[{"name":"FDA 21 CFR","issuer":"FDA","standard":"21 CFR Parts 170-199","scope":"Food contact substances, indirect food additives, migration limits"},{"name":"EU 10/2011","issuer":"European Commission","standard":"Regulation (EU) No 10/2011","scope":"Plastic materials intended to come into contact with food"},{"name":"NSF/ANSI 51","issuer":"NSF International","standard":"NSF/ANSI 51 Food Equipment Materials","scope":"Materials used in commercial food equipment"}],"labeling":{"required_disclosures":[],"prop65_warning":{"required":null,"chemicals":[],"endpoint":null,"notes":null},"ghs_labeling":{"required":null,"signal_word":null,"pictograms":[],"hazard_statements":[],"notes":null},"hidden_ingredients":{"trade_secret_protected":null,"categories_hidden":[],"estimated_count":null,"known_concerns":null,"notes":null},"notes":null},"recalls":[],"regulatory_gap":null,"notes":null},"lifecycle":{"recyclable":true,"disposal_guidance":"Recycle by resin code if marked; check local program; food-soiled items may not be accepted","hazardous_waste":false,"expected_lifespan":"1-3_years"},"formulation":{"form":"composite_material","key_ingredients":[{"hq_id":"hq-c-ino-000107","name":"Pea protein isolate or hemp protein (protein base)","role":"active_ingredient","concentration_pct":"60-80"},{"hq_id":"hq-c-ino-000001","name":"Heavy metals (lead, cadmium in brown rice protein)","role":"additive","concentration_pct":"trace ppb"},{"hq_id":"hq-c-ino-000028","name":"Stevia or cane sugar (sweetener)","role":"additive","concentration_pct":"1-5"},{"hq_id":"hq-c-ino-000001","name":"Natural or artificial flavors","role":"additive","concentration_pct":"1-3"}],"certifications":[]},"materials":{"common":[{"material_id":"hq-m-str-000070","material_name":"Heavy metal bioaccumulation in plant-derived protein concentrates","component":"Dietary protein supplement; daily consumption by health-conscious consumers","prevalence":"common"}],"concerning":[{"material_id":"hq-m-str-000070","concern":"Lead carbonate pigment (white lead) (IARC 1, GHS: Danger)","compounds_of_concern":["Lead carbonate pigment (white lead)"],"source_refs":[]},{"material_id":"hq-m-str-000070","concern":"Linseed oil binder","compounds_of_concern":["Linseed oil binder"],"source_refs":[]},{"material_id":"hq-m-str-000070","concern":"Potential contaminant: Lead dust from paint deterioration","compounds_of_concern":["hq-c-ino-000186"],"source_refs":[]}],"preferred":[{"material_id":null,"material_name":"Low-emission alternatives (FSC wood, mineral-based)","why_preferred":"","tradeoffs":"Lower VOC/formaldehyde emissions; may cost more; availability varies"}]},"compound_composition":[{"hq_id":"hq-c-ino-000001","compound_name":"Lead (Pb)","role":"base","typical_concentration":null}],"identifiers":{"common_names":["plant-based protein","pea protein powder","hemp protein","brown rice protein","vegan protein"],"aliases":[],"manufacturer":null,"brands":[]},"brand_examples":[{"brand":"Generic Mass-Market Brand A","manufacturer":"Consumer Products Corporation","market_position":"mass_market","notable":"Widely available mass-market option"},{"brand":"Generic Mass-Market Brand B","manufacturer":"Consumer Goods Ltd","market_position":"mass_market","notable":"Popular budget alternative"},{"brand":"Premium Brand A","manufacturer":"Premium Consumer Inc","market_position":"premium","notable":"Upscale premium positioning"},{"brand":"Professional Brand","manufacturer":"Professional Products Co","market_position":"professional","notable":"Professional/salon-grade option"},{"brand":"Specialty Eco-Brand","manufacturer":"Natural Products Ltd","market_position":"premium","notable":"Sustainable/natural product line"}],"brand_examples_disclaimer":"Representative branded products of this category. Concerning ingredients listed in materials.concerning[] apply to the category, not necessarily to every named brand. Specific formulations vary by SKU and may have changed since this record was written; consult the brand's current ingredient label before drawing brand-level conclusions.","sources":[{"id":"src_001","type":"journal","title":"Consumer Reports (2018) — Heavy Metals in Plant-Based Protein Powders","year":2018,"notes":"100% detection of cadmium, lead, arsenic, mercury"},{"type":"regulation","title":"FDA 21 CFR Parts 170–189 (Food Contact Substances)","jurisdiction":"USA","id":"src_236ea76c"},{"type":"regulation","title":"Regulation (EC) No 1935/2004 (Framework Regulation on Food Contact Materials)","jurisdiction":"EU","id":"src_5c7d1067"},{"type":"regulation","title":"Regulation (EU) No 10/2011 (Plastics in Food Contact)","jurisdiction":"EU","id":"src_acd69b29"},{"type":"regulation","title":"California Proposition 65 (Safe Drinking Water and Toxic Enforcement Act)","jurisdiction":"USA — California","id":"src_a6f0bc64"},{"type":"regulation","title":"EPA Lead Renovation, Repair and Painting Rule (RRP, 40 CFR Part 745)","jurisdiction":"USA","id":"src_ada0a8c3"},{"id":"src_002","type":"who","title":"WHO - Lead Poisoning Fact Sheet","url":"https://www.who.int/news-room/fact-sheets/detail/lead-poisoning-and-health","year":2024,"accessed":"2026-01-13","relevance":"Global burden statistics, health effects","inherited_from_compound":"hq-c-ino-000001"}],"meta":{"schema_version":"4.0.0","last_updated":"2026-03-25","timestamp":"2026-05-13T22:21:10.595Z"}}