@AndyChanMD

Gastroenterologist/Epidemiologist @MGHMedicine, prof @harvardmed and @HarvardChanSPH, Chief @MGH_CTEU, Director of Epi at @MGHCancerCenter. Tweets my own.

 Boston
dfhcc.harvard.edu/insider/member-detail/member/andrew-t-chan-md-mph/
Joined January 2011
  • Tweets439
  • Following179
  • Followers1.4K
12Media
1/15 USPSTF2021 recs (overturns milestone USPSTF2016) now drop #colorectalcancer (CRC) prevention as a rationale for taking aspirin I think they missed the mark I’ve dug into their evidence synthesis and can expand what I told @nytimes A thread👇🏽 nytimes.com/2021/10/12/healt…

Aspirin Use to Prevent 1st Heart Attack or Stroke Should Be Curtailed, U.S. Panel Says (Gift...

Adults at high risk for cardiovascular disease may face serious side effects if they start a daily regimen of low-dose aspirin.

nytimes.com
3
27
4
64
Replying to @Nature
Thank you @AndyChanMD @Mengxi_D for this terrific News&Views.
1
1
394
Andy Chan retweeted
SU2Cscience
@SU2CscienceJan 8
Gastric cancer claims more than 750,000 lives each year. In partnership with @CR_UK, we’ve extended funding for a research dream team that has developed a way to find and stop #gastriccancer at its earliest stages, when treatment is most effective: standuptocancer.org/latest-n… @LumicellSurg @MassGenBrigham

Latest News | SU2C Adds New Expertise | Stand Up To Cancer®

SU2C has added three new members to our Scientific Advisory Committee (SAC). The addition of these new SAC members will enhance the diversity of expertise and perspectives while complementing and...

standuptocancer.org
4
5
1
11
1,217
Andy Chan retweeted
Gut Journal
@Gut_BMJ20 Dec 2025
#GUTImage from the paper by Ma @wenjie_ma2 et al on the paper "Lifestyle factors, genetic susceptibility and risk of incident diverticulitis: an integrated analysis of four prospective cohort studies and electronic health records-linked biobank" via bit.ly/47RroIp @MGH_CTEU @HarvardChanSPH @AndyChanMD #Diverticulitis #GUTAbstract
1
6
7
1,217
Andy Chan retweeted
Gut Journal
@Gut_BMJ29 Nov 2025
#GUTImage from the paper by Ma @wenjie_ma2 et al on the paper "Lifestyle factors, genetic susceptibility and risk of incident diverticulitis: an integrated analysis of four prospective cohort studies and electronic health records-linked biobank" via bit.ly/47RroIp @MGH_CTEU @HarvardChanSPH @AndyChanMD #Diverticulitis #GUTAbstract
6
7
1,233
New @NatureAging paper from @AndyChanMD & colleagues using plasma proteomics data from UKBB & validation cohorts: Organ-specific proteomic aging clocks predict disease and longevity across diverse populations nature.com/articles/s43587-0… Particularly striking data on brain aging
5
17
2,327
New @JAMAOnc study from @AndyChanMD & @CancerGrand Team PROSPECT Ultraprocessed Food Consumption and Risk of Early-Onset Colorectal Cancer Precursors Among Women jamanetwork.com/journals/jam… The study looked at early onset adenomas (tubular and serrated) in the Nurses’ Health Study.

Ultraprocessed Food and Early-Onset Colorectal Cancer Precursors Among Women

This study evaluates the association of the consumption of ultraprocessed foods and the risk of early-onset colorectal cancer (age <50 years) in participants of the Nurses’ Health Study II.

jamanetwork.com
2
10
1,317
Andy Chan retweeted
Gut Journal
@Gut_BMJ15 Nov 2025
#GUTImage from the paper by Ma @wenjie_ma2 et al on the paper "Lifestyle factors, genetic susceptibility and risk of incident diverticulitis: an integrated analysis of four prospective cohort studies and electronic health records-linked biobank" via bit.ly/47RroIp @MGH_CTEU @HarvardChanSPH @AndyChanMD #Diverticulitis #GUTAbstract
5
3
887
Ultra-processed foods linked to increased risk of precancerous colon polyps, study finds. Great new study by @AndyChanMD and colleagues/team! nbcnews.com/health/cancer/ul… via @nbcnews #crc #colorectalcancer

Ultra-processed foods linked to increased risk of precancerous polyps, study finds

The research, which included 29,000 women, could offer insights into the rise in rates of colorectal cancer among younger adults.

nbcnews.com
1
4
15
1,040
Andy Chan retweeted
GIE@GIE_Journal8 Jul 2025
Online in GIE’s Articles in Press: "Revisiting the starting age of colorectal cancer screening for the average-risk Asian population: a cost-effectiveness analysis" by Junjie Huang et al. giejournal.org/article/S0016… #GITwitter @junjie_cuhk @drwong_martin @AndyChanMD @ClaireCWZhong
1
7
1,136
Andy Chan retweeted
Gut Journal
@Gut_BMJ1 Jul 2025
Read the #GUTOnline #GUTInTheNews #GUTPressRelease paper by @wenjie_ma2 et al entitled "Lifestyle factors, genetic susceptibility and risk of incident diverticulitis: an integrated analysis of four prospective cohort studies and electronic health records-linked biobank" via bit.ly/3G9zZwr @MGH_CTEU @HarvardChanSPH @AndyChanMD #Diverticulitis
1
10
17
1,974
What Age Is the Best “FIT” for Colorectal Cancer Screening? jamanetwork.com/journals/jam… Thankful for the opportunity to write this editorial with @KimmieNgMD and @AndyChanMD @DFarberYoungCRC @MGH_CTEU @DanaFarberNews

What Age Is the Best “FIT” for Colorectal Cancer Screening?

This Editorial discusses the urgent need to better understand the effectiveness of noninvasive stool-based tests such as the fecal immunochemical test and fecal occult blood test in younger populat...

jamanetwork.com
3
16
37
4,019
🔥🔥📝 Hot off the Press: Our clinical validation study of a blood test for CRC screening👇🏼👇🏼👇🏼👇🏼 🔵 n=27010 🔵CRC sens 80%, spec 91% 🔵May help those unscreened despite stool test and COL @nyulangone @NYULH_DeptofMed jamanetwork.com/journals/jam…

Clinical Validation of a Circulating Tumor DNA–Based Blood Test to Screen for Colorectal Cancer

This diagnostic study assesses the accuracy of an investigational blood-based circulating tumor DNA test for detection of colorectal cancer in an asymptomatic average-risk population.

jamanetwork.com
8
24
1
103
7,959
Andy Chan retweeted
Mengxi Du@Mengxi_D5 May 2025
Replying to @MingyangSong3
@MingyangSong3 @AndyChanMD @HarvardEpi @HarvardChanSPH @HSPHCancerEpi
Clinical & Translational Epidemiology Unit - MGH@MGH_CTEU5 May 2025
Not all UPFs are created equal! 💡Using plasma biomarkers, @Mengxi_D’s study found that acceptable-quality UPFs (e.g. whole-grain cereals) were linked to lower GI cancer risk, while poor-quality ones (e.g. sugary drinks) raised the risk. #GICancer #UPF #CancerPrevention #DDW2025
1
2
226
How does AI and natural language processing help identify diverticulitis associated features in electronic health records and predict outcomes? Explore the data at @wenjie_ma2’s poster! @AndyChanMD @LisaStrateMD @LiloWuyilun #AI #NLP #EHR #DiverticularDisease #DDW2025
1
2
10
538
How does diet shape fecal bile acid profiles and impact colorectal neoplasia risk? Join @wangkaiepi's talk at #DDW2025 to learn more! @AndyChanMD @MingyangSong3 @HarvardEpi @HarvardChanSPH @HSPHCancerEpi #Microbiome #BileAcids #CancerPrevention #GutHealth #ColorectalCancer
1
2
6
468
Does ultra-processed food increase early-onset colorectal neoplasia risk? @PhyllisWhatsUp's study in young women suggests a strong link. @AndyChanMD @Mengxi_D #EOCRC #Nutrition #CancerEpi #DDW2025
1
3
5
394
It is an honor to have @AndyChanMD as the Graham-Schwartz lecture speaker for our @BCMDeptMedicine and @tmcddc – at Houston, TX
1
5
1
29
2,423
A study co-authored by #MassGeneral physician @AndyChanMD was covered by @WebMD. The study found that eating at least two servings of yogurt a week can help prevent colon cancer.webmd.com/colorectal-cancer/…

Colorectal Cancer

Colorectal cancer starts in the lining of your large intestine, also known as the colon, or in your rectum. Learn more about the definition, types, causes, risk factors, symptoms, diagnosis, stages,...

webmd.com
1
3
313
We're honored to be featured in the Harvard Gazette for our recent journal article on colorectal cancer screening. @MingyangSong3 @AndyChanMD @wangkaiepi @HSPHCancerEpi @HarvardEpi @HarvardChanSPH Our findings have significant implications for personalized healthcare: Individuals with a clean colonoscopy might extend their screening intervals beyond 10 years, depending on lifestyle risk factors and family history. This framework helps refocus healthcare resources on those at greater risk—those who've never been screened and disadvantaged groups with traditionally lower screening rates. We're grateful to the Harvard Gazette for highlighting our efforts. You can read the article here: news.harvard.edu/gazette/sto… #HarvardGazette #ColorectalCancer #ResearchHighlight #PublicHealth #Healthcare

Study opens door to a rethink of colonoscopy guidelines — Harvard Gazette

Change informed by new findings would help specialists focus on those most at risk, researcher says.

news.harvard.edu
2
3
495
Thank you @AndyChanMD of @MGH_GI for joining us as the Binder lecturer and @YaleIMed #GrandRounds! 2️⃣ talks encompassing the 🔗 between diet & microbiome 🦠 & cancer ➕ aspirin for cancer prevention. Inspiring innovative work! Our faculty & fellows ❤️ed meeting you! 🙏
2
15
879

No more items