J Sports Sci Med June 2021 PMID 34211326

Undeclared Doping Substances are Highly Prevalent in Commercial Sports Nutrition Supplements.

Erik Duiven, Luc J C van Loon, Laila Spruijt, Willem Koert, Olivier M de Hon

Mentions

32
Peak: 7 in Mar 2021
across 2 sources since Mar 2021

Extended reach

99,790
potential audience

Total likes

49

Video views

5,141

Mentions per month

Mar 2021 – Sep 2025

Where it's discussed

  • X / Twitter26 posts
  • YouTube6 videos

AI synopsis

What people are saying

Several posts express alarm at the findings, citing specific statistics such as '38% of supplements contained undeclared doping substances,' which underscores the widespread risk. Terms like 'high risk' and phrases like 'beware' and 'cautious choice' exemplify the serious tone and urgency attributed to the publication, highlighting its perceived influence on sports health and safety practices.

AgreementStrong agreement

Most discussions reinforce the serious concern raised by the publication about the prevalence of undeclared doping substances in sports supplements, supporting its findings and implications.

InterestHigh interest

The posts demonstrate high curiosity and relevance, with multiple references to specific substances and the health and ethical risks involved, indicating strong engagement with the topic.

EngagementHigh engagement

Many discussions include detailed information, such as research findings, statistics (38% contamination rate), and mentions of banned substances like clenbuterol and stanozolol, showing deep involvement in analyzing the issue.

ImpactHigh impact

Participants believe this publication has significant implications for athletes, consumers, and the sports industry, emphasizing the need for cautious supplement choices and potential regulatory changes.

Abstract in brief

  • A study of 66 sports nutrition supplements bought from Dutch web shops found that 38% contained undeclared doping substances, including stimulants and steroids, which pose health risks and could lead to doping violations in sports.
  • These undeclared substances included stimulants like oxilofrine and DMAA, anabolic steroids such as boldione and 17dione, as well as other compounds like higenamine and bisoprolol, found at high levels.
  • Consuming these products at recommended doses could unintentionally cause doping violations and potentially harm users' health due to the presence of these substances.

Top posts

Most liked on X and Bluesky
Fizz-DI@比較と使い分け-KOJIMA Yushi
@Fizz_DI · X

オランダのネットショップで販売されている「パフォーマンス向上を謳う高リスクなサプリメント」の66製品中、25製品に未申告のドーピング禁止薬物が含有(3製品では健康被害のリスクも)していた、という報告。 J Sports Sci Med.20(2):328-338,(2021) PMID:34211326 https://t.co/J2kQCDEjZS

Feb 13, 2023 · 18 likes · 6 shares · 34,418 followers View post →
info@ergogenics.org
@ErgoLog · X

Dutch researchers analyzed 66 bodybuilding supplements. 38 percent of the supplements contained doping substances in low and sometimes high concentrations. https://t.co/7Hd9aDq2Iw

Apr 7, 2021 · 11 likes · 3 shares · 5,078 followers View post →
やすくん
@yasukun6791 · X

オンライン販売サプリ、66製品のうち、25の製品に禁止物質。しかも高用量含まれているものも

Aug 5, 2021 · 6 likes · 1 share · 4,931 followers View post →
Michele Verroken
@SportIntegrity · X

Undeclared Doping Substances are Highly Prevalent in Commercial Sports Nutrition Supplements - #sportsscience #exercisescience #sportsmedicine https://t.co/GcS5fJDDMo via @j_s_s_m

Apr 28, 2021 · 3 likes · 2,315 followers View post →
Jurgen van Teeffelen
@JvTeeffelen · X

Bewust of onbewust: 4 op de 10 'hoog-risico' commerciële voedingssupplementen bevat nog steeds middelen die op de #doping lijst staan. #sportsscience #exercisescience #sportsmedicine https://t.co/GOUUftIpuk via @j_s_s_m

Mar 29, 2021 · 2 likes · 1 share · 799 followers View post →
Nick Krontiris
@nick_krontiris · X

Undeclared Doping Substances are Highly Prevalent in Commercial Sports Nutrition Supplements (open access) https://t.co/hWfbCOjhNC #supplements #supplement #nutrition #diet

Jul 4, 2021 · 1 like · 19,088 followers View post →

All mentions

メディカルトリビューン編集部(薬剤情報担当)
@pharmatribune · X

RT @Fizz_DI: オランダのネットショップで販売されている「パフォーマンス向上を謳う高リスクなサプリメント」の66製品中、25製品に未申告のドーピング禁止薬物が含有(3製品では健康被害のリスクも)していた、という報告。 J Sports Sci Med.20(2):3…

Feb 14, 2023 · 6 shares · 2,918 followers View post →
pmさっとん
@pmsattttton · X

RT @Fizz_DI: オランダのネットショップで販売されている「パフォーマンス向上を謳う高リスクなサプリメント」の66製品中、25製品に未申告のドーピング禁止薬物が含有(3製品では健康被害のリスクも)していた、という報告。 J Sports Sci Med.20(2):3…

Feb 13, 2023 · 6 shares · 4,800 followers View post →
やすくん
@yasukun6791 · X

RT @Fizz_DI: オランダのネットショップで販売されている「パフォーマンス向上を謳う高リスクなサプリメント」の66製品中、25製品に未申告のドーピング禁止薬物が含有(3製品では健康被害のリスクも)していた、という報告。 J Sports Sci Med.20(2):3…

Feb 13, 2023 · 6 shares · 4,931 followers View post →
ほういち(っ'-')╮ =͟͟͞͞☔️
@iccc_ccchi · X

RT @Fizz_DI: オランダのネットショップで販売されている「パフォーマンス向上を謳う高リスクなサプリメント」の66製品中、25製品に未申告のドーピング禁止薬物が含有(3製品では健康被害のリスクも)していた、という報告。 J Sports Sci Med.20(2):3…

Feb 13, 2023 · 6 shares · 761 followers View post →
SAKUYA
@SAKUYA18330217 · X

RT @Fizz_DI: オランダのネットショップで販売されている「パフォーマンス向上を謳う高リスクなサプリメント」の66製品中、25製品に未申告のドーピング禁止薬物が含有(3製品では健康被害のリスクも)していた、という報告。 J Sports Sci Med.20(2):3…

Feb 13, 2023 · 6 shares · 434 followers View post →
matiere*
@matiere · X

RT @Fizz_DI: オランダのネットショップで販売されている「パフォーマンス向上を謳う高リスクなサプリメント」の66製品中、25製品に未申告のドーピング禁止薬物が含有(3製品では健康被害のリスクも)していた、という報告。 J Sports Sci Med.20(2):3…

Feb 13, 2023 · 6 shares · 2,842 followers View post →
Fizz-DI@比較と使い分け-KOJIMA Yushi
@Fizz_DI · X

オランダのネットショップで販売されている「パフォーマンス向上を謳う高リスクなサプリメント」の66製品中、25製品に未申告のドーピング禁止薬物が含有(3製品では健康被害のリスクも)していた、という報告。 J Sports Sci Med.20(2):328-338,(2021) PMID:34211326 https://t.co/J2kQCDEjZS

Feb 13, 2023 · 18 likes · 6 shares · 34,418 followers View post →
Blonyx Biosciences
@Blonyx · X

An indication of how cautious you need to be in choosing a supplement brand... 38% of sports supplements reporting to improve performance or muscle were found to contain banned substances not included on their label in a Dutch market test. https://t.co/1hxpxoBgHH

Oct 27, 2021 · 1,411 followers View post →
横山暁子
@yokoakipp · X

RT @yasukun6791: オンライン販売サプリ、66製品のうち、25の製品に禁止物質。しかも高用量含まれているものも

Aug 5, 2021 · 1 share · 1,115 followers View post →
やすくん
@yasukun6791 · X

オンライン販売サプリ、66製品のうち、25の製品に禁止物質。しかも高用量含まれているものも

Aug 5, 2021 · 6 likes · 1 share · 4,931 followers View post →
ACHS Library
@LibraryACHS · X

New NUTRITION Research Available. Click Here to Access Article(s): https://t.co/pR1fjB9UEC

Jul 7, 2021 · 14 followers View post →
Alex
@AlexViKu · X

Undeclared Doping Substances are Highly Prevalent in Commercial Sports Nutrition Supplements https://t.co/Y52xo3p7xu

Jul 5, 2021 · 97 followers View post →
Nick Krontiris
@nick_krontiris · X

Undeclared Doping Substances are Highly Prevalent in Commercial Sports Nutrition Supplements (open access) https://t.co/hWfbCOjhNC #supplements #supplement #nutrition #diet

Jul 4, 2021 · 1 like · 19,088 followers View post →
Michele Verroken
@SportIntegrity · X

Undeclared Doping Substances are Highly Prevalent in Commercial Sports Nutrition Supplements - #sportsscience #exercisescience #sportsmedicine https://t.co/GcS5fJDDMo via @j_s_s_m

Apr 28, 2021 · 3 likes · 2,315 followers View post →
JeaunMariBreytenbach
@Jeaun_MariBrey3 · X

Undeclared Doping substances are highly prevalent in Commercial Sports Nutrition Supplements. ( hence why Cycling teams lose sponsorships & cyclists are blind sided by it. #phentermine #stanozol #clenbuterol #salbuterol https://t.co/uYOfno7wM7

Apr 23, 2021 · 71 followers View post →
Sasquatch
@_realSasquatch · X

RT @ErgoLog: Dutch researchers analyzed 66 bodybuilding supplements. 38 percent of the supplements contained doping substances in low and s…

Apr 8, 2021 · 3 shares · 719 followers View post →
Toppform Oslo
@Toppform_gym · X

RT @ErgoLog: Dutch researchers analyzed 66 bodybuilding supplements. 38 percent of the supplements contained doping substances in low and s…

Apr 8, 2021 · 3 shares · 244 followers View post →
IronHeaver
@IronHeaver · X

RT @ErgoLog: Dutch researchers analyzed 66 bodybuilding supplements. 38 percent of the supplements contained doping substances in low and s…

Apr 7, 2021 · 3 shares · 764 followers View post →
info@ergogenics.org
@ErgoLog · X

Dutch researchers analyzed 66 bodybuilding supplements. 38 percent of the supplements contained doping substances in low and sometimes high concentrations. https://t.co/7Hd9aDq2Iw

Apr 7, 2021 · 11 likes · 3 shares · 5,078 followers View post →
Fabien Ohl
@ohlfabien · X

RT @JvTeeffelen: Bewust of onbewust: 4 op de 10 'hoog-risico' commerciële voedingssupplementen bevat nog steeds middelen die op de #doping…

Mar 31, 2021 · 1 share · 679 followers View post →
Jurgen van Teeffelen
@JvTeeffelen · X

Bewust of onbewust: 4 op de 10 'hoog-risico' commerciële voedingssupplementen bevat nog steeds middelen die op de #doping lijst staan. #sportsscience #exercisescience #sportsmedicine https://t.co/GOUUftIpuk via @j_s_s_m

Mar 29, 2021 · 2 likes · 1 share · 799 followers View post →
Ammas Nuskhe
@AmmasNuskhe · X

Undeclared Doping Substances are Highly Prevalent in Commercial Sports Nutrition Supplements #Nutrition via https://t.co/IphRfr8oSG https://t.co/7edUfnBOTu

Mar 28, 2021 · 140 followers View post →
Jeffery Nutrition
@JefferyNutr · X

Undeclared Doping Substances are Highly Prevalent in Commercial Sports Nutrition Supplements https://t.co/FiXx1RUkXU

Mar 28, 2021 · 1 like · 284 followers View post →
Mikki Williden PhD
@MikkiWilliden · X

Undeclared Doping Substances are Highly Prevalent in Commercial Sports Nutrition Supplements - #sportsscience #exercisescience #sportsmedicine https://t.co/suuwxhdHSi via @j_s_s_m

Mar 27, 2021 · 2,240 followers View post →
Mike Aughey
@sardisjocks · X

Undeclared Doping Substances are Highly Prevalent in Commercial Sports Nutrition Supplements - #sportsscience #exercisescience #sportsmedicine https://t.co/eF0A0GSIHo via @j_s_s_m

Mar 27, 2021 · 460 followers View post →
J Sports Sci Med
@j_s_s_m · X

Undeclared Doping Substances are Highly Prevalent in Commercial Sports Nutrition Supplements - #sportsscience #exercisescience #sportsmedicine #doping #NutritionSupplements #supplements https://t.co/JjDeakYAxc @j_s_s_m

Mar 24, 2021 · 1 like · 2,982 followers View post →