MedicalResearch.com Interview with:
Mireille Serlie, MD PhD
Academic Medical Center
University of Amsterdam
Department of Endocrinology and Metabolism
Amsterdam, The Netherlands
MedicalResearch What are the main findings of the study?
Dr. Serlie: We studied the effects of hypercaloric high sugar or high fat/high sugar drinks consumed with the 3 main meals (representing an increase in meal size) or in between the 3 main meals (representing an increase in meal frequency or snacking). All subjects gained a similar amount of body weight but only the ones that snacked showed an increase in liver and abdominal fat. This suggests that besides caloric content and diet composition, eating pattern independently contributes to liver and abdominal fat accumulation. We also observed a trend for a decrease in hepatic insulin sensitivity in the high fat/high sugar frequency group only.
MedicalResearch.com Interview with:
Jessica A. Grieger (BSc(hons), R Nutr, PhD)
Post-doctoral research fellow
Robinson Research Institute, University of Adelaide
MedicalResearch: What are the main findings of the study?
Dr. Grieger: The study aimed to identify associations between maternal dietary patterns in the 12 months before conception on fetal growth and preterm delivery. We report that a one standard deviation increase in the scores on the high-protein/fruit pattern was associated with decreased likelihood for preterm birth, whereas a one standard deviation increase on the high-fat/sugar/takeaway pattern was associated with increased likelihood for preterm birth as well as shorter gestation and birth length.
MedicalResearch.com Interview with:
Dr. Frank B. Hu MD MPH PhD
Professor of Nutrition and Epidemiology
From the Departments of Nutrition and Epidemiology
Harvard School of Public Health, Boston, MA
MedicalResearch.com: What are the main findings of the study?
Dr. Hu: We found that people who increased the amount of coffee they drank each day by more than one cup over a four-year period had a 11% lower risk for type 2 diabetes than those who made no changes to their coffee consumption, but those who decreased their coffee consumption by more than a cup per day increased their type 2 diabetes risk by 17%.
MedicalResearch.com Interview with:
Professor Gary Frost PhD RD
Head of the Nutrition and Dietetic Research Group
NIHR Senior Investigator
Division of Diabetes, Endocrinology and Metabolism
Faculty of Medicine Imperial College Hammersmith Campus
London W12 ONN
MedicalResearch.com: What are the main findings of the study?
Prof. Frost: That acetate that is derived from the fermentation of dietary fiber in the colon by the microbiota is taken up by the hypothalamus in the brain. In the hypothalamus the way the cells metabolize acetate creates a signal that suppresses appetite
MedicalResearch.com Interview with:
Shanshan Li, Doctoral candidate
Department of Epidemiology
Harvard School of Public Health, 655 Huntington Avenue
Boston, MA 02115, USA
MedicalResearch.com: What are the main findings of the study?
Answer: This is the first study to show that greater intake of dietary fiber,
especially cereal fiber, was inversely associated with all-cause
mortality. Participants increased their average dietary fiber intake
after myocardial infarction (MI), and the greater the increase, the lower was the risk of
subsequent all-cause and cardiovascular mortality. Overall, the
benefits for increased fiber intake were strongest for fiber from
cereal and grain sources.
MedicalResearch.com Interview with:
Dr. Annette Dickinson PhD
Consultant to the Council for Responsible Nutrition.
MedicalResearch.com: What are the main findings of the study?
Dr. Dickinson: “A five-year series of consumer surveys (2007 to 2011) consistently found that about half of adult consumers use dietary supplements on a regular basis, and a higher percentage (about 2/3) report using dietary supplements when occasional as well as regular use is taken into account. Over the five years, there was a shift in the pattern of supplement use, with the percentage of respondents who said they regularly used mostly a multivitamin declining, and the percentage who said they regularly used a variety of products increasing. The top 7 products used were: multivitamins, omega-3 fatty acids, calcium, vitamin D, vitamin C, B vitamins, and vitamin E. The main reasons given for supplement use were for overall health and wellness (58% of users) and to fill nutrient gaps in the diet (42%). Supplement users were more likely than nonusers to say they try to eat a balanced diet, visit their doctor regularly, get a good night's sleep, exercise regularly, and maintain a healthy weight. This indicates that supplement use is part of an overall approach to seeking a healthy lifestyle.”
MedicalResearch.com Interview with:
Dr. Feng He
Wolfson Institute of Preventive Medicine
Barts and The London School of Medicine and Dentistry
Queen Mary University of London, London, UKMedicalResearch.com: What are the main findings of the study?
Dr. He:
MedicalResearch.com Interview with:
Sabina Sieri, PhD
Epidemiology and Prevention Unit
Department of Preventive & Predictive Medicine
Fondazione IRCCS Istituto Nazionale dei Tumori
20133 Milan – Italy
MedicalResearch.com: What are the main findings of this study?
Dr. Sieri: In our study we found that there was an increased risk of developing breast cancer from high saturated fat intake. High total and saturated fat intake were associated with greater risk of ER PR positive breast cancer. High saturated fat intake was also associated with a greater risk of HER2 negative disease. So, a high-fat diet increases breast cancer risk and, most conspicuously, a high saturated fat intake increases the risk of developing hormone-sensitive diseases, suggesting saturated fat involvement in the etiology of hormone-sensitive breast cancer.
MedicalResearch.com Interview with:
Prof. Dr. Christa E. Müller
University of Bonn Pharmaceutical Institute Pharmaceutical
Chemistry I An der Immenburg 4 D-53121 Bonn (Endenich) Germany
MedicalResearch.com: What are the main findings of the study?
Prof. Dr. Christa E. Müller: Genetically altered mice which show an aggregation of Tau protein and many symptoms of Alzheimer's Disease which progressively worsen with time was used.
Caffeine was given to one group of mice at an early stage, when the symptoms were still moderate.
The caffeine-treated mice showed better memory and less inflammation and brain damages in comparison to the non-treated control mice. This means that caffeine protected the mice to some extent. The side effects were moderate.
MedicalResearch.com Interview with:
Woon-Puay Koh (Associate Professor)
Office of Clinical Sciences
Duke-NUS Graduate Medical School Singapore
8 College Road Level 4 | Singapore 169857
MedicalResearch.com: What are the main findings of the study?
Answer: The main finding is that coffee intake was associated with a lower risk of death from cirrhosis, specifically for non-viral hepatitis related cirrhosis. Subjects who drank two or more cups per day had a 66% reduction in mortality risk, compared to non-daily coffee drinkers. However, coffee intake was not associated with viral hepatitis B related cirrhosis mortality.
MedicalResearch.com Interview with:
Dr. Milan K Piya
NIHR Clinical Lecturer in Diabetes and Endocrinology
Warwick Medical School, University of Warwick;
University Hospitals Coventry and Warwickshire NHS Trust
Coventry, UK
MedicalResearch.com: What are the main findings of the study?
Answer: Our studies have identified two main findings:
Firstly that the size or frequency of the meal doesn’t affect the calories we burn in a day, but what matters most for losing weight is counting calories.
Secondly, by carrying more weight, more endotoxin enters the circulation to cause inflammation and eating more often will exacerbate this risk which has been linked to metabolic diseases such as type-2 diabetes.
MedicalResearch.com Interview with:
Dr Oyinlola Oyebode
Specialist Registrar in Public Health
Dept of Epidemiology & Public Health
University College London
MedicalResearch.com: What are the main findings of the study?
Dr. Oyebode: We found that the more fruit and vegetables consumed, the lower the risk of death from any cause, from cancer or from heart disease or stroke. We found that vegetables were better than fruit at equivalent amounts.
MedicalResearch.com Invitation with:
Dr Valerie Sung MBBS(Hons) FRACP MPH
NHMRC PhD Candidate, Department of Paediatrics, University of Melbourne, and Community Health Services Research, Murdoch Childrens Research Institute
Paediatrician, Centre for Community Child Health
The Royal Children’s Hospital
MedicalResearch.com: What are the main findings of the study?
Dr. Sung: Lactobacillus reuteri was NOT effective in reducing crying or fussing in infants with colic, whether they are breast or formula fed. This is the largest and most rigorous trial to date to show this.
Niederdeppe
Assistant Professor Department of Communication
Cornell University.
MedicalResearch.com: What are the main findings of the study?
Answer: We conducted an Internet-based survey (N = 1319) with a nationally-representative sample of U.S. adults aged 18–64 during the fall of 2012. Americans voiced the highest levels of support for calorie labeling (65%) and removing drinks from schools (62%), and the lowest support for taxes (22%) or portion size restrictions (26%). Americans were evenly split on whether or not they support restricting sugary drink to children (50%) and requiring TV stations to air ads promoting healthy eating and exercise equal to the time used to advertise for sugary drinks (51%). Democrats and those with negative views of soda companies are more likely to support each of these policies.
MedicalResearch.com Interview with:
Barbara J. Rolls, PhD
Department of Nutritional Sciences
The Pennsylvania State University, 226 Henderson Building
University Park, PA 16802-6501
MedicalResearch.com: What are the main findings of the study?
Dr. Rolls: We found that as we reduced the flake size of a breakfast cereal so that it filled a smaller volume, individuals ate a greater weight and more calories of the cereal. On four occasions, we served a popular wheat flake cereal, or the same weight of cereal crushed to 80%, 60%, or 40% of its volume, to 41 adults for breakfast. As the flake size was reduced, people made reductions in the volume of cereal they poured, but they still took a greater amount of weight and calories. They ended up eating 72 more calories at breakfast when they ate the cereal with the smallest flake size, an increase of 34%. These findings show that variations in food volume due to the size of individual food pieces affect the portion of food that people take, which in turn affects how much they eat.
MedicalResearch.com Interview with:
Laureen Smith, PhD
Associate Professor
College of Nursing, The Ohio State University
Columbus, OH 43210
MedicalResearch.com: What are the main findings of the study?
Dr. Smith: Daily sugar-sweetened beverage decreased significantly by about 1 serving per day. Also weekly consumption decreased from an average of over 4 days per week to about 2 ½ days per week. Generally, the teens were drinking the beverages fewer days per week and less servings on the days they did consume them. These changes were maintained on their own for a month after the intervention ended. Water consumption increased nearly 20 percent immediately post intervention and continued to increase at 30 days post-intervention.
MedicalResearch.com Interview with:
Prof. Lu Qi,
Assistant Professor, Department of Nutrition
Harvard School of Public Health and Channing Division of Network Medicine
Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA
MedicalResearch.com: What are the main findings of the study?
Dr. Lu Qi: In this study, we for the first time provide reproducible evidence from three large cohort studies to show that the association between regular consumption of fried foods and higher BMI was particularly pronounced among people with a greater genetic predisposition to obesity. On the other hand, the adverse genetic effects on BMI were also amplified by consuming more fried foods, the effects among those who ate fried foods more than four times a week was about twice as large compared with those who ate them less than once a week.
MedicalResearch.com Interview Invitation with:
Dr. Eliana M. Perrin, MD, MPH
Associate Vice Chancellor for Research, and Director, Office of Research Development
University of North Carolina at Chapel Hill and
Associate Professor
Department of Pediatrics, Division of General Pediatrics and Adolescent Medicine University of North Carolina at Chapel Hill, School of Medicine
Chapel Hill, NC 27599-7225
MedicalResearch.com: What are the main findings of the study?
Dr. Perrin: The study included a large, diverse sample of 863 low-income parents of two-month-olds participating in Greenlight, an obesity prevention trial taking place at four medical centers: UNC, New York University, Vanderbilt University and the University of Miami. Among all of the parents, behaviors that are thought to be related to later obesity were highly prevalent. Exclusive formula feeding was more than twice as common (45 percent) as exclusive breastfeeding (19 percent). Twelve percent had already introduced solid food, 43 percent put infants to bed with bottles, 23 percent propped bottles instead of holding the bottle by hand (which can result in overfeeding), 20 percent always fed when the infant cried, and 38 percent always tried to get their children to finish their milk. In addition, 90 percent of the infants were exposed to television and 50 percent actively watched TV (meaning parents put their children in front of the television in order to watch). There were differences in these behaviors by race and ethnicity, and study results show that culturally-tailored counseling should be offered to parents of different backgrounds who may feed and play with their children differently.
MedicalResearch.com Interview with:
Rajiv Chowdhury MD, PhD
Cardiovascular Epidemiologist
Department of Public Health and Primary Care
University of Cambridge
MedicalResearch.com: What are the main findings of the study?
Dr. Chowdhury: Total saturated fatty acid, whether measured as a dietary intake variable or in the bloodstream as a biomarker, was not associated with coronary disease risk in combining all available prospective observational studies. Similarly, there were non-significant overall associations in the prospective studies that involved assessments of total monounsaturated fatty acids, long-chain omega-3 and omega-6 polyunsaturated fatty acids.
However, we found diversity in the observational associations between specific circulating long-chain omega-3 and omega-6 fatty acids with coronary risk, with some evidence that circulating levels of eicosapentaenoic and docosahexaenoic acids (ie, the two main types of long-chain omega-3 polyunsaturated fatty acids), and arachidonic acid are each associated with lower coronary risk. Similarly, within saturated fatty acids, there were positive, however, non-significant associations observed for circulating blood composition of palmitic and stearic acids (found largely in palm oil and animal fats, respectively), whereas circulating margaric acid (a milk fat) had a significant inverse association.
Additionally, when we investigated the randomised controlled trials that reported on the effects of omega-3 and omega-6 fatty acids on reducing coronary outcomes, there was no significant overall association observed.
MedicalResearch.com Interview with:
Beverly B. Green, MD, MPH
GroupHealth Research Institute
Seattle WA
MedicalResearch.com: What are the main findings of the study?
Dr. Green: We found that Group Health patients who were overweight and had hypertension were more likely to have lost 10 pounds in six months if they had secure online access to a dietitian than if they received only information and usual care. The patients really loved this intervention—and having access to a dietitian to work with them toward a healthier lifestyle. Although blood pressure and heart risk trended lower in the intervention group, the differences weren’t significant—unlike their weight.
MedicalResearch.com Interview with:
Dr James J DiNicolantonio PharmD
Ithaca, New York
MedicalResearch.com: What are the main findings of the study?
Dr. DiNicolantonio: The increase in the prevalence of diabetes and obesity in the United States occurred with an increase in the consumption of carbohydrate not saturated fat. There is no conclusive proof that a low-fat diet has any positive effects on health (good or bad). The public fear that saturated fat raises cholesterol is completely unfounded as the low-density lipoprotein (LDL) particle size distribution is worsened when fat is replaced with carbohydrate. A public health campaign is drastically needed to educate on the harms of a diet high in carbohydrate/sugar.
Dr Linda Englund-Ögge
Department of Obstetrics and Gynaecology, Institute of Clinical Sciences
Sahlgrenska Academy, Sahlgrenska University Hospital
Gothenburg, Sweden
MedicalResearch.com: What are the main findings of the study?
Answer: Women adhering to a prudent* or a traditional** dietary pattern during pregnancy had a significantly reduced risk of preterm delivery, even after adjusting for a range of confounders. The prudent pattern was also significantly associated to lower risk in the nulliparous, in spontaneous and in late preterm delivery.
*, characterized by high intake of e.g. vegetables, fruit, whole grains and water to drink.
**, characterized by high intake of e.g. boiled potatoes, fish and cooked vegetables.
MedicalResearch.com Interview with:
Dr. Ulf Risérus
Associate Professor in Clinical Nutrition
Department of Public Health and Caring Sciences
Clinical Nutrition and Metabolism
Faculty of Medicine, Uppsala university
Sweden
MedicalResearch.com: What are the main findings of the study?
Dr. Risérus: It has previously been shown in animal studies that overfeeding polyunsaturated fat causes less fat accumulation than saturated fats, but this study is the first to suggest that this could be true also in humans. Overeating saturated fats caused significantly more accumulation of fat in the liver and intra-abdominally, as compared with overeating polyunsaturated fats from. This study suggests it does matter where the excess calories come from when we gain weight. If a high-caloric diet contains large amounts of saturated fats it seems to switch on some genes that may promote abdominal fat storage and insulin resistance, and thereby result in a more unfavorable fat storage. In contrast, such effects were not seen if the diet was lower in saturated fats but higher in polyunsaturated fats from non-tropical vegetable oils. This study also suggests a novel contributing factor regarding the tendency of some individuals to accumulate fat in the liver and abdomen, i.e. in some people excessive amounts of saturated fat in combination with sugars might induce more fat in their livers and a propensity towards abdominal visceral fat accumulation.
MedicalResearch.com Interview with:
Dr. Jane Muncke PhD
Managing Director
Food Packaging Forum Foundation
Zurich, Switzerland
MedicalResearch.com: What are the main conclusions from your work?
Answer: Food packaging is a relevant, but still under-recognized source of chemical contamination in foods. Everybody is exposed to these chemicals on a daily basis, but we have very little understanding of the actual health effects caused by this chronic exposure source. We propose that epidemiological research tackles chemical exposures from food packaging as a new and highly relevant exposure source. Epidemiologist have played crucial roles in advancing understanding of health issues, for example cardiovascular disease caused by fine particulate air pollution. Through their work they have encouraged toxicologists to ask different questions, thereby supporting the generation of critical knowledge and, essentially, enabling prevention.