Plant protein powder swap to Dairy-based protein

Why make the swap

• Why switch to dairy-based protein

  Dairy-based powders such as whey have tended to test lower in heavy metals than plant-based ones. Both picks are dairy-based, and Consumer Reports’ 2025 tests put both in its ‘Better Choices for Daily Consumption’ group for lead.

• What's the concern with plant protein powder

  Plant-based protein powders tend to carry more lead than dairy-based ones. A 2026 study of 30 sports supplements sold in China found plant-based ones averaged 3× the lead of dairy-based ones, measured per kilogram of powder. Consumer Reports’ 2025 tests of 23 US powders and shakes found plant-based ones averaged 9×, and judged each serving against 0.5 micrograms of lead a day, far stricter than FDA’s reference level of 8.8 micrograms a day for adults. Different products, countries and measures explain most of the gap; both point the same way. No amount of lead is known to be safe, and lead builds up in bones over time, so a daily scoop adds up. Studies modeling typical use found levels unlikely to cause harm, but less is better.

• General information, not medical advice. Ask your doctor, especially if you’re pregnant, nursing or have a health condition.

• Good to know before you buy

  Plant-based? None of the eight plant-based powders in Consumer Reports’ 2025 tests made that group. Choose a maker that publishes lot-by-lot heavy-metal test results.

  BSN Syntha-6 protein powder, Vanilla Ice Cream, 5 lb (48 servings): Consumer Reports tested this flavor in 2025: 46% of its strict daily lead level per scoop, in its 'Better Choices for Daily Consumption' group. Made mostly of whey and casein milk proteins.

  Optimum Nutrition Gold Standard 100% Whey, Double Rich Chocolate, 2 lb: Consumer Reports tested Gold Standard 100% Whey in chocolate in 2025: 56% of its strict daily lead level per scoop, in its 'Better Choices for Daily Consumption' group.

• Sources (5)

  1. Chen et al. 2026, Environ Res: 30 supplements sold in China; plant-derived mean Pb 0.18 vs dairy 0.06 mg/kg (P<0.01) (opens in a new tab)
  2. Consumer Reports, Oct 2025: 23 US protein powders and shakes; plant-based averaged 9× the lead of dairy-based, judged against CR's 0.5 µg/day level (opens in a new tab)
  3. Bandara et al. 2020, Toxicol Rep: whey powders had the lowest hazard index; typical intake not expected to cause harm (opens in a new tab)
  4. WHO: lead accumulates in teeth and bones; no level of exposure known to be without harmful effects (opens in a new tab)
  5. FDA: no safe level of lead exposure has been identified (opens in a new tab)

  Consumer Reports doesn’t endorse DetoxSwap or these products, and we have no connection with it.

  Health and safety facts on this page come from these sources. What a pick is made of comes from its maker's listing or website, as stated on the date we checked.