Posts by Andrew T. Chan, MD, MPH
-
Aspirin Doubles Risk for Upper GI Bleeding Events in Older Adults
Analysis from the large, controlled ASPREE trial found that aspirin use almost doubles the risk for serious upper gastrointestinal bleeding in the elderly.
-
Public Health: Surveying COVID-19 Symptoms
Existing predictive models show an incomplete picture when mapping the transmission and spread of COVID-19. Participatory syndromic-surveillance tools that utilize the Internet and mobile devices can provide faster, more accurate predictive models of infectious disease transmission and help address critical needs.
-
Coffee, Tea and Soda Increase Risk of Gastroesophageal Reflux
Consumption of coffee, tea or soda is associated with modestly increased risk of heartburn and acid regurgitation, and the relationship seems to be dose dependent, according to the first prospective study of this issue.
-
COVID-19 Symptom App to Study Disease Onset and Progression
Researchers led by Andrew T. Chan, MD, MPH, have developed a COVID-19 symptom research app, which already has close to 2 million users each day.
-
Anti-inflammatory Diet May Prevent, Treat Diverticulitis
Data from the Health Professionals Follow-Up Study show a significant association between chronic inflammation and subsequent risk of diverticulitis.
-
New Female-centric Research Provides Dietary Guidance for Preventing Diverticulitis
Gastroenterologists at Massachusetts General Hospital have conducted the first comprehensive, prospective evaluation of dietary fiber intake in relation to the risk of diverticulitis in women.
-
Review: Lifestyle Factors, Changes in Gut Microbiota Are Linked in Development of Colorectal Cancer
Both diet, lifestyle and the gut microbiome have been implicated in colorectal tumorigenesis. Accumulating evidence suggests these two influences are related and may point the way to better prevention strategies.
-
TV Viewing Time May Affect Risk of Young-onset Colorectal Cancer
Using data from the prospective Nurses Health Study II, researchers at the Massachusetts General Hospital Cancer Center have found that a moderate amount of television watching is associated with greater risk of developing colorectal cancer before age 50.
-
Characterizing the Stability of the Gut Microbiome
By studying the stability of the structure and function of the fecal microbiome, gastroenterologists at Massachusetts General Hospital are working to determine which features of the microbiome might represent diagnostic or prognostic biomarkers.
-
BMI Linked to Diverticulitis in Women
Using data from the Nurses' Health Study, gastroenterologists at Massachusetts General Hospital found an independent association between BMI and risk of diverticulitis in women.
-
Fiber Intake Has Survival Benefit in Patients Already Diagnosed with Colorectal Cancer
In the first prospective study of the topic, gastroenterologists and epidemiologists at Massachusetts General Hospital found that higher fiber intake after a diagnosis of nonmetastatic colorectal cancer is associated with longer survival.
-
Antibiotic Use Linked to Colorectal Adenoma in Women
Researchers at Massachusetts General Hospital have become the first to link the duration of antibiotic use to colorectal adenoma, the primary precursor of colorectal cancer.
Digestive Healthcare at Mass General
The Massachusetts General Hospital Digestive Healthcare Center is a collaborative practice of gastroenterologists, endoscopists, surgeons, radiologists, pathologists, hepatologists, oncologists and radiation oncologists dedicated to the prevention, diagnosis, treatment and management of digestive diseases.
