J Diet Suppl February 2024 PMID 37712532

A Multi-Year Rancidity Analysis of 72 Marine and Microalgal Oil Omega-3 Supplements.

Jacob M Hands, Mark L Anderson, Tod Cooperman, Leigh A Frame

Mentions

74
Peak: 20 in Sep 2023
across 5 sources since Sep 2023

Extended reach

397,220
potential audience

Total likes

223

Video views

5,435

Mentions per month

Sep 2023 – Sep 2025

Where it's discussed

  • X / Twitter38 posts
  • News30 articles
  • Reddit3 posts
  • YouTube2 videos
  • Bluesky1 posts

AI synopsis

What people are saying

The social discussions revolve around the alarming results of the multi-year analysis showing nearly half of omega-3 supplements are rancid, with posts emphasizing that

AgreementModerate agreement

Most discussions acknowledge the findings of the study, with users emphasizing the prevalence of rancid omega-3 supplements and supporting the importance of monitoring supplement quality.

InterestHigh interest

The posts show high interest, as many users highlight concerns about supplement safety and cite detailed data from the study, indicating active engagement with the topic.

EngagementHigh engagement

Several discussions reference research methodology, specific statistics (like nearly 45% of supplements being rancid), and include references to scientific publications, demonstrating deep engagement.

ImpactModerate impact

The conversations suggest moderate impact, with some posts advocating for consumer awareness and industry scrutiny, though widespread behavior change is implied but not explicitly shown.

Abstract in brief

  • There is a significant variation in the freshness of consumer marine- and plant-derived omega-3 supplements, with concerns about rancidity and oxidation frequently debated in existing literature.
  • A study assessed 72 omega-3 supplements sold in the U.S. from 2014 to 2020, measuring key indicators of freshness, and found that a large percentage of flavored and unflavored products exceeded established oxidation limits.
  • The research also emphasizes the impact of flavoring on the oxidative status of these supplements, highlighting potential health implications for consumers.

Top posts

Most liked on X and Bluesky
Pookleblinky
@pookleblinky.bsky.social · Bluesky

Also: fish oil. Periodically you want to bite down on a fish oil pill and see if it tastes normal or rancid. Rancid fish oil does basically the exact opposite of what you're taking fish oil to do. pubmed.ncbi.nlm.nih.gov/37712532/ Fun fact: most fish oil is rancid

Nov 16, 2024 · 14 likes · 6 shares View post →
J P Fanton
@HealthyFellow · X

A Multi-Year #Rancidity Analysis of 72 Marine & Microalgal Oil Omega-3 #Supplements ⁦@_atanas_⁩ ⁦@_INPST⁩ ⁦@ScienceCommuni2⁩ ⁦@DHPSP⁩ ⁦@BowTiedVitamins⁩ ⁦@ChrisMasterjohn⁩ ⁦@HeidiHmoretti⁩ ⁦@hormonedietdoc⁩ https://t.co/1pShCZmPO6

Sep 17, 2023 · 12 likes · 3 shares · 26,028 followers View post →
Joy Y. Erdile (Kiddie), MSc, RD
@jyerdile · X

A new study conducted over six years on 72 of the most popular brands of #omega3 #supplements found almost #HALF (45%) of flavored and unflavored supplements were #rancid. https://t.co/R2Wo98GaEt

Sep 18, 2023 · 10 likes · 3 shares · 8,568 followers View post →
Jacob M. Hands
@jacobmhands · X

Thank you to @JDietSupplement for publishing our nearly 10 year study on rancidity and #omega3 supplements (US) with added flavoring. Special thank you to co-authors @PhD_Leigh, Tod Cooperman, MD and Mark Anderson, PhD (@ConsumerLab) — summary below https://t.co/86aGFympD2

Sep 15, 2023 · 10 likes · 1 share · 174 followers View post →
BowTiedPhys
@BowTiedPhys · X

@DragonBowtied Excellent nuance (per usual). Thinking on this exactly your final point: longevity guru is pitching a fish oil supplement. At times, ANY supplement. When in reality the market is full of highly oxidized, rancid trash. More trash than pure unfortunately. https://t.co/AdGxQbOiYy

Nov 22, 2024 · 9 likes · 26,474 followers View post →
Leigh A. Frame
@PhD_Leigh · X

Worried about omega-3 supplementation? Listen to this #podcast and read our review on the science behind omega-3 supplements & why studies are conflicting or null: https://t.co/Ci0acDC42d Also, our study on rancidity in omega-3 supplements: https://t.co/2hxDWuxbp5 @jacobmhands https://t.co/Y7d3qtNZFG

Oct 8, 2024 · 6 likes · 4 shares · 4,933 followers View post →

All mentions

Leigh A. Frame
@PhD_Leigh · X

RT @jacobmhands: @paulsaladinomd Hey @paulsaladinomd we publish on this subject routinely with our lab @PhD_Leigh you should check out any…

Sep 20, 2025 · 1 share · 4,933 followers View post →
Jacob M. Hands
@jacobmhands · X

@paulsaladinomd Hey @paulsaladinomd we publish on this subject routinely with our lab @PhD_Leigh you should check out any of our papers published in partnership with https://t.co/StLy7HmpNT you’re wrong @Madam_Mito https://t.co/J6pdzwQ7hl

Sep 19, 2025 · 3 likes · 1 share · 174 followers View post →
Gaslight
@RetailGaslight · X

@incelantithesis @TakeThiamine If you didn't use chatGPT for your response and did your own research then you'd have stumbled across this study https://t.co/p8UgN04vLH

Jul 31, 2025 · 2 likes · 218 followers View post →
やまだ@腸活×アンチエイジング
@tarou_ymd_ · X

5%、不整脈の一種である心房細動のリスクを13%高めることと関連すると報告した論文もある。上記↑ 3. 酸化・品質の問題 魚油は非常に酸化しやすい脂肪酸であり、市販サプリの多くが 製造段階や流通中に劣化している。 https://t.co/ya6b9uktFP

Mar 27, 2025 · 1 like · 6,290 followers View post →
BowTiedPhys
@BowTiedPhys · X

@DragonBowtied Excellent nuance (per usual). Thinking on this exactly your final point: longevity guru is pitching a fish oil supplement. At times, ANY supplement. When in reality the market is full of highly oxidized, rancid trash. More trash than pure unfortunately. https://t.co/AdGxQbOiYy

Nov 22, 2024 · 9 likes · 26,474 followers View post →
BowTiedPhys
@BowTiedPhys · X

@Khatayi17 The likelihood of you getting a rancid one in the market is much greater than a pure one. https://t.co/AdGxQbOiYy

Nov 22, 2024 · 4 likes · 26,474 followers View post →
Harold Mustin
@HRMustin · X

@SamaHoole https://t.co/l6IOffdwSJ

Nov 22, 2024 · 19,519 followers View post →
Pookleblinky
@pookleblinky.bsky.social · Bluesky

Also: fish oil. Periodically you want to bite down on a fish oil pill and see if it tastes normal or rancid. Rancid fish oil does basically the exact opposite of what you're taking fish oil to do. pubmed.ncbi.nlm.nih.gov/37712532/ Fun fact: most fish oil is rancid

Nov 16, 2024 · 14 likes · 6 shares View post →
David Adams
@david_adams22 · X

RT @PhD_Leigh: Worried about omega-3 supplementation? Listen to this #podcast and read our review on the science behind omega-3 supplements…

Oct 8, 2024 · 4 shares · 309 followers View post →
Danny Lennon
@NutritionDanny · X

RT @PhD_Leigh: Worried about omega-3 supplementation? Listen to this #podcast and read our review on the science behind omega-3 supplements…

Oct 8, 2024 · 4 shares · 8,894 followers View post →
Tucker Goodrich
@TuckerGoodrich · X

RT @PhD_Leigh: Worried about omega-3 supplementation? Listen to this #podcast and read our review on the science behind omega-3 supplements…

Oct 8, 2024 · 4 shares · 28,292 followers View post →
Jacob M. Hands
@jacobmhands · X

RT @PhD_Leigh: Worried about omega-3 supplementation? Listen to this #podcast and read our review on the science behind omega-3 supplements…

Oct 8, 2024 · 4 shares · 174 followers View post →
Leigh A. Frame
@PhD_Leigh · X

Worried about omega-3 supplementation? Listen to this #podcast and read our review on the science behind omega-3 supplements & why studies are conflicting or null: https://t.co/Ci0acDC42d Also, our study on rancidity in omega-3 supplements: https://t.co/2hxDWuxbp5 @jacobmhands https://t.co/Y7d3qtNZFG

Oct 8, 2024 · 6 likes · 4 shares · 4,933 followers View post →
Jacob M. Hands
@jacobmhands · X

Couple other things, as our lab @PhD_Leigh, have explored many times, fish oil is not created equal and therefore the effect of consumption is going to be inconsistent and marred by low quality supplements https://t.co/J6pdzwQF6T

May 26, 2024 · 2 likes · 174 followers View post →
Vahid ⛓
@george_yule1367 · X

@aahonarmand البته فراموش نشه تقریبا اغلب (نزدیک 50%) مکمل های روغن ماهی در بازار فاسد شده اند. https://t.co/l2ZYx6bVjb

May 15, 2024 · 3 likes · 1,097 followers View post →
Moo Moo LaBiff
@moomoolabiff · X

@lynlynyl @celestialbe1ng @AnooshVafaei wow two seconds of googling is really hard https://t.co/iBT0LOHPvU https://t.co/C3Bv4Y0AWw https://t.co/o4C9IQmJTs basically it’s a coin flip at best that you don’t get a rancid supply and negative on that coin flip is way worse than the theorised positives on it

Mar 18, 2024 · 329 followers View post →
Eliott
@CoachEliott · X

@MindfulKingdom https://t.co/2aT6XZaWov

Feb 16, 2024 · 247 followers View post →
Jacob M. Hands
@jacobmhands · X

@soonergise @TuckerGoodrich Been researching oxidation and omega3 for many years brother! Check out @ConsumerLab @foundmyfitness or better yet read our paper if you’d like to read my work here https://t.co/J6pdzwQF6T how’s your pubmed?

Nov 19, 2023 · 1 like · 174 followers View post →
Tucker Goodrich
@TuckerGoodrich · X

@nicknorwitz @exfatloss @foundmyfitness @realDaveFeldman I'm going to be interviewing @jacobmhands, the first author of this paper soon: "Overall, the oxidative state of the consumer Ω3 products tested is not, at this time, a demonstrated hazard."* "A Multi-Year Rancidity Analysis of 72 Marine and Microalgal Oil Omega-3 Supplements"

Oct 28, 2023 · 5 likes · 28,292 followers View post →
Leigh A. Frame
@PhD_Leigh · X

RT @lchfRD: A new study conducted over six years on 72 of the most popular brands of #omega3 #supplements found almost #HALF (45%) of flavo…

Sep 25, 2023 · 3 shares · 4,933 followers View post →
株式会社サンクト
@sanct200301 · X

米国ジョージ・ワシントン大学の研究者らは、2014-2020年に米国で販売される魚介類及び藻類由来オメガ3脂肪酸含有サプリメント製品72点の分析を行い、多くの製品において油脂の酸化(過酸化物価、アニシジン価、TOTOX)が見られることを報告しています。#オメガ3脂肪酸 #酸化 https://t.co/5vTCtJuUib

Sep 24, 2023 · 3 likes · 767 followers View post →
#No2Treason
@netzona · X

RT @lchfRD: A new study conducted over six years on 72 of the most popular brands of #omega3 #supplements found almost #HALF (45%) of flavo…

Sep 23, 2023 · 3 shares · 1,708 followers View post →
ConsumerLab.com
@ConsumerLab · X

https://t.co/1baEDIfoJr’s research findings regarding the freshness of oil in omega-3 supplements are the basis for an analysis published in the Journal of Dietary Supplements in September 2023. Read now: https://t.co/LqDpZv6fO5

Sep 20, 2023 · 1 like · 3,908 followers View post →
TheHealthyRD
@HeidiHmoretti · X

RT @lchfRD: A new study conducted over six years on 72 of the most popular brands of #omega3 #supplements found almost #HALF (45%) of flavo…

Sep 20, 2023 · 3 shares · 74,962 followers View post →
Tabatha
@araran100 · X

RT @keisuke4713: 72種類の海洋・微細藻類油ω3サプリ 複数年の腐敗度分析https://t.co/t20ekulHdA 消費者向けフレーバー付きΩ3サプリ68%23/34と無フレーバー13%5/38がEPA・DHA世界機構基準上限値超え フレーバーサプリ65%…

Sep 19, 2023 · 3 shares · 17,530 followers View post →
やっさん
@kuanyi_vet · X

RT @keisuke4713: 72種類の海洋・微細藻類油ω3サプリ 複数年の腐敗度分析https://t.co/t20ekulHdA 消費者向けフレーバー付きΩ3サプリ68%23/34と無フレーバー13%5/38がEPA・DHA世界機構基準上限値超え フレーバーサプリ65%…

Sep 19, 2023 · 3 shares · 730 followers View post →
Maurício Lima
@dj_surfista · X

Um novo estudo realizado ao longo de 6 anos em 72 das marcas mais populares de suplementos de #omega3 mostrou quase metade (45 %) dos suplementos com e sem sabor estavam rançosos. https://t.co/MxUXL3tgMf

Sep 19, 2023 · 741 followers View post →
at sushi
@JOf1MMMIos9r0y0 · X

RT @keisuke4713: 72種類の海洋・微細藻類油ω3サプリ 複数年の腐敗度分析https://t.co/t20ekulHdA 消費者向けフレーバー付きΩ3サプリ68%23/34と無フレーバー13%5/38がEPA・DHA世界機構基準上限値超え フレーバーサプリ65%…

Sep 19, 2023 · 3 shares · 4,144 followers View post →
tune
@keisuke4713 · X

72種類の海洋・微細藻類油ω3サプリ 複数年の腐敗度分析https://t.co/t20ekulHdA 消費者向けフレーバー付きΩ3サプリ68%23/34と無フレーバー13%5/38がEPA・DHA世界機構基準上限値超え フレーバーサプリ65%22/34と無フレーバーサプリ32%12/38が上限満たさず、フレーバーサプリ62%21/34が上限値越え https://t.co/sxi1q52TUW

Sep 19, 2023 · 3 likes · 3 shares · 3,732 followers View post →
Joy Y. Erdile (Kiddie), MSc, RD
@jyerdile · X

A new study conducted over six years on 72 of the most popular brands of #omega3 #supplements found almost #HALF (45%) of flavored and unflavored supplements were #rancid. https://t.co/R2Wo98GaEt

Sep 18, 2023 · 10 likes · 3 shares · 8,568 followers View post →
Jacob M. Hands
@jacobmhands · X

RT @GWIntegrative: What we're reading from @PhD_Leigh Frame, who co-authored the article published in @JDietSupplement: "A Multi-Year Ranci…

Sep 18, 2023 · 1 share · 174 followers View post →
GW Integrative Medicine
@GWIntegrative · X

What we're reading from @PhD_Leigh Frame, who co-authored the article published in @JDietSupplement: "A Multi-Year Rancidity Analysis of 72 Marine and Microalgal Oil Omega-3 Supplements." https://t.co/EOQMIqnAri #nutrition #supplements #MedEd https://t.co/JjFBAqVBXr

Sep 18, 2023 · 5 likes · 1 share · 1,273 followers View post →
TheHealthyRD
@HeidiHmoretti · X

RT @HealthyFellow: A Multi-Year #Rancidity Analysis of 72 Marine & Microalgal Oil Omega-3 #Supplements ⁦@_atanas_⁩ ⁦@_INPST⁩ ⁦@ScienceCommu…

Sep 18, 2023 · 3 shares · 74,962 followers View post →
AngryPhDstudent❗️❗️❗️
@ONNESHA092 · X

RT @HealthyFellow: A Multi-Year #Rancidity Analysis of 72 Marine & Microalgal Oil Omega-3 #Supplements ⁦@_atanas_⁩ ⁦@_INPST⁩ ⁦@ScienceCommu…

Sep 18, 2023 · 3 shares · 191 followers View post →
Michael Paladin
@TheTexasPaladin · X

RT @HealthyFellow: A Multi-Year #Rancidity Analysis of 72 Marine & Microalgal Oil Omega-3 #Supplements ⁦@_atanas_⁩ ⁦@_INPST⁩ ⁦@ScienceCommu…

Sep 17, 2023 · 3 shares · 1,486 followers View post →
J P Fanton
@HealthyFellow · X

A Multi-Year #Rancidity Analysis of 72 Marine & Microalgal Oil Omega-3 #Supplements ⁦@_atanas_⁩ ⁦@_INPST⁩ ⁦@ScienceCommuni2⁩ ⁦@DHPSP⁩ ⁦@BowTiedVitamins⁩ ⁦@ChrisMasterjohn⁩ ⁦@HeidiHmoretti⁩ ⁦@hormonedietdoc⁩ https://t.co/1pShCZmPO6

Sep 17, 2023 · 12 likes · 3 shares · 26,028 followers View post →
My So-Carbed Life
@mysocarbedlife · X

New study: A Multi-Year Rancidity Analysis of 72 Marine and Microalgal Oil Omega-3 Supplements. J Diet Suppl. 2023 Sep 15;1-12. https://t.co/esifgwZi7b

Sep 15, 2023 · 10 followers View post →
Jake Mey, PhD, RD
@CakeNutrition · X

RT @jacobmhands: Thank you to @JDietSupplement for publishing our nearly 10 year study on rancidity and #omega3 supplements (US) with added…

Sep 15, 2023 · 1 share · 8,632 followers View post →
Jacob M. Hands
@jacobmhands · X

Thank you to @JDietSupplement for publishing our nearly 10 year study on rancidity and #omega3 supplements (US) with added flavoring. Special thank you to co-authors @PhD_Leigh, Tod Cooperman, MD and Mark Anderson, PhD (@ConsumerLab) — summary below https://t.co/86aGFympD2

Sep 15, 2023 · 10 likes · 1 share · 174 followers View post →