MedicalResearch.com - Latest news, interviews, and insights into medical research, health and wellness, fitness and addiction.
Author Interviews, Autism, OBGYNE, Pain Research, Pediatrics / 23.09.2025

Statement from Andrea Baccarelli, MD, PhD Dean of the Faculty Professor of Environmental Health Harvard T.H. Chan School of Public Health Colleagues and I recently conducted a rigorous review, funded by a grant from the National Institutes of Health (NIH), of the potential risks of acetaminophen use during pregnancy. We reviewed 46 previously published human studies worldwide. We found evidence of an association between exposure to acetaminophen during pregnancy and increased incidence of neurodevelopmental disorders in children. This association is strongest when acetaminophen is taken for four weeks or longer. (more…)
Alzheimer's - Dementia, Author Interviews, Brigham & Women's - Harvard, JAMA, Nutrition / 07.05.2024

MedicalResearch.com Interview with: Marta Guasch-Ferré, PhD Associate Professor and Deputy Head of Section, Section of Epidemiology University of Copenhagen Group Leader, Novo Nordisk Foundation Center for Basic Metabolic Research Adjunct Associate Professor, Department of Nutrition Harvard TH Chan School of Public Health MedicalResearch.com: What is the background for this study? Response:  Olive oil is rich in monounsaturated fats and contains compounds with antioxidant activity that may play a protective role for the brain. Olive oil as part of a Mediterranean diet appears to have a beneficial effect against cognitive decline. Higher olive oil intake was previously associated with a lower risk of cardiovascular disease and mortality. But its association with dementia mortality was unknown. (more…)
Author Interviews, Brigham & Women's - Harvard, Infections, JAMA, Multiple Sclerosis, Neurological Disorders / 19.03.2024

MedicalResearch.com Interview with: Marianna Cortese, MD, PhD Senior Research ScientistDepartment of Nutrition Harvard T.H. Chan School of Public HealthBoston, MA 02115   MedicalResearch.com: What is the background for this study? Response: In a study published in Science in 2022, we reported compelling evidence that infection with the Epstein-Barr virus is the leading cause of Multiple Sclerosis. This is a follow-up study to investigate more in depth whether the antibody response to EBV is distinct in individuals with MS compared to individuals without MS and whether there is a part of EBV that the immune response is particularly targeting. For this purpose we assessed the immune response to all protein parts (peptides) of EBV and their association with MS. Previous studies could only look at parts of EBV and this is the first study looking at all EBV peptides. Antibodies to EBV (especially to a protein called EBNA1) are known to be overall higher in individuals with MS, so we also tested whether immune response overall or the immune response to specific EBV protein parts was more important. If the immune response to a specific EBV protein part (peptide) would be standing out or distinguishing individuals with MS, we hypothesized, it could point to a specific mechanism of how EBV may cause MS, i.e. it could point for example towards “molecular mimicry”, which is when antibodies targeting a pathogen start targeting a body-own structure (for example in the brain) which resembles the protein parts of the pathogen. (more…)
Author Interviews, Brigham & Women's - Harvard, Lancet, Pediatrics, Vitamin D / 05.12.2023

MedicalResearch.com Interview with: Dr Ganmaa Davaasambuu MD PhD Associate Professor Harvard T.H. Chan School of Public Health MedicalResearch.com: What is the background for this study? Response: The crucial role of vitamin D in facilitating calcium absorption from the diet and promoting calcium deposition in bones (known as 'mineralization') has been a long-established understanding. Furthermore, some observational studies have reported an association between low vitamin D levels and a heightened risk of bone fractures in children. This raised the possibility that vitamin D supplements could potentially play a role in decreasing fracture risk in children with initially low baseline levels. However, clinical trials assessing the causal link between low vitamin D status and reduced fracture risk were necessary, and such trials had not been conducted before. (more…)
Accidents & Violence, Aging, Author Interviews, BMJ, Brain Injury, Brigham & Women's - Harvard, Exercise - Fitness / 15.12.2022

MedicalResearch.com Interview with: Rachel Grashow PhD Research Scientist Department of Environmental Health Football Players Health Study at Harvard University Harvard T.H. Chan School of Public Health MedicalResearch.com: What is the background for this study? Response: Anecdotally, we heard from former NFL players that they felt older than their chronological age. At the same time, doctors and medical care providers treating former players also observed that players appeared clinically older in some health domains. These observations motivated us to ask:  despite superior fitness and success as young men, are football players experiencing early aging and living with illness and disability for more years than their non-football peers? (more…)
Author Interviews, Brigham & Women's - Harvard, JAMA, Nutrition, Occupational Health, Sleep Disorders / 09.11.2022

MedicalResearch.com Interview with: Zhilei Shan, MD, PhD Postdoctoral fellow on Nutritional Epidemiology Harvard T.H. Chan School of Public Health MedicalResearch.com: What is the background for this study? Response: Unhealthy sleep behaviors and sleep disturbances are associated with higher risk of multiple diseases and mortality. The current profiles of sleep habits and disturbances, particularly the differences between workdays and free days, are unknown in the contemporary US. MedicalResearch.com: What are the main findings? Response: In this nationally representative cross-sectional analysis with 9004 adults aged 20 years or older, differences in sleep patterns between workdays and free days were observed. The mean sleep duration was 7.59 hours on workdays and 8.24 hours on free days (difference, 0.65 hour). The mean sleep and wake times were at 11:02 PM and 6:41 AM, respectively, on workdays and 11:25 PM and 7:41 AM, respectively, on free days (differences, 0.23 hour for sleep time and 1.00 hour for wake time). With regard to sleep disturbances, 30.5% of adults experienced 1 hour or more of sleep debt,46.5% experienced 1 hour or more of social jet lag, 29.8% had trouble sleeping, and 27.2% experienced daytime sleepiness. (more…)
Author Interviews, Brigham & Women's - Harvard, Heart Disease, JAMA, Stroke / 30.09.2021

MedicalResearch.com Interview with: Daniel E. Singer, MD Professor of Medicine, Harvard Medical School Professor in the Department of Epidemiology Harvard T.H. Chan School of Public Health Division of General Internal Medicine Massachusetts General Hospital Boston, MA, 02114 MedicalResearch.com: What is the background for this study? Response: Atrial fibrillation (AF) raises the risk of ischemic stroke 4-5-fold and this risk is largely reversible by oral anticoagulants (OAC). These facts are part of the core knowledge of internal medicine and the basis of multiple guidelines. They are based on studies of patients with persistent or predominantly “heavy burden” paroxysmal AF completed in the 1990s. More recent studies using cardiac implantable devices (CIEDs: implantable defibrillators, pacemakers, etc) which have the capacity to monitor heart rhythm continuously have found that many older patients have brief, often undiagnosed, episodes of AF. Several of these studies have found that strokes occur during periods of sinus rhythm temporally distant from a preceding episode of AF. This has led to a widespread suspicion that AF is not a direct causal risk factor but a risk “marker” indicating the presence of other truly causal features like a diseased left atrium (atrial myopathy). If the risk marker hypothesis is correct, then long-term anticoagulation is needed even for brief and rare episodes of AF (assuming the patient’ s CHA2DS2-VASc score is high enough). The key problem with prior prospective studies using CIEDs was that only a small number of strokes were observed leading to inadequate statistical power. Our study addressed this power problem by linking the very large Optum electronic health record database which could identify ischemic strokes with the Medtronic CareLink database of long-term, continuous heart rhythm records of patients with CIEDs. We ended up studying 891 individuals who had an ischemic stroke and had 120 days of continuous heart monitoring prior to the stroke. (more…)
Author Interviews, Brigham & Women's - Harvard, Colon Cancer, Gastrointestinal Disease, Sugar / 06.05.2021

MedicalResearch.com Interview with: Jinhee Hur, PhD Research Fellow Department of Nutrition Harvard T.H. Chan School of Public Health Boston, MA 02115 MedicalResearch.com: What is the background for this study? Response: Early-onset colorectal cancer (EO-CRC, age <50 years at diagnosis) is rapidly rising in the US since the mid-1980s, with an unclear understanding of its etiology and contributors to the rise. Sugar-sweetened beverages (SSBs) exert adverse metabolic repercussions throughout the life course, including insulin resistance and inflammation. Higher SSB intake can induce obesity, which has been linked to risk of EO-CRC. A recent experimental study also suggests that high fructose corn syrup, a primary sweetener in SSBs, may promote colon tumor growth, independent of metabolic dysregulation. In the US, SSB consumption has dramatically increased during the 2nd half of the 20th century, and adolescents and young adults have been the heaviest SSB drinkers across all age groups. Thus, we expect SSBs may be an emerging risk factor for EO-CRC and likely contribute to the rising incidence of EO-CRC. (more…)