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…)
Author Interviews, Cancer Research, Dermatology, Melanoma, Vitamin C / 10.01.2023

MedicalResearch.com Editors' note:  Please consult your health care provider before initiating any vitamin supplementation, including Vitamin D as potentially serious side effects are possible. MedicalResearch.com Interview with: Prof. Ilkka T Harvima Department of Dermatology University of Eastern Finland and Kuopio University Hospital Kuopio, Finland MedicalResearch.com: What is the background for this study? Response: The North Savo Skin Cancer Program in Eastern Finland was launched in 2017, and it aims at reducing the incidence, morbidity and mortality caused by skin cancers, such as basal cell carcinoma, squamous cell carcinoma and melanoma. A part of this program constituted a follow-up project of patients with an assessed risk of skin cancer. There are also several other parts, such as analysis of skin cancer material reposited in the Biobank of Eastern Finland (see the enclosed BMC Cancer 2021 reference), public information, education of general physicians and medical students etc. In 2021, we published the article in BMC Cancer (enclosed), where we attempted to clarify the reasons for the relatively high melanoma mortality in relation to its incidence in this region (North Savo) of the country. By using the biobank material we also published an article in 2022 showing that melanoma and melanoma in situ associate with keratinocytic premalignant lesions and keratinocyte skin carcinomas (Suhonen V, Siiskonen H, Suni M, Rummukainen J, Mannermaa A, Harvima IT. Malignant and in situ subtypes of melanoma are associated with basal and squamous cell carcinoma and its precancerous lesions. Eur J Dermatol 2022 Apr 1;32(2):187-194. doi: 10.1684/ejd.2022.4221.). The follow-up study of about 500 subjects is ongoing (COVID-19 caused pretty much trouble for the recruitment). This is focused on finding risk factors and biomarkers for skin cancers and carcinogenesis. The first study on these follow-up patients was published in 2021 (Komulainen J, Siiskonen H, Harvima IT. Association of elevated serum tryptase with cutaneous photodamage and skin cancers. Int Arch Allergy Immunol 2021;182(11):1135-1142. doi: 10.1159/000517287.). The article on vitamin D just recently published in Melanoma Research on Dec 28, 2022, is the second one. The third work in pipeline deals with the association of atopic disorders with skin cancers, and the manuscript is under revision. So, these provide with some background for the article in Melanoma Research. Actually, we thought that vitamin D use might associate with skin photoaging, actinic keratoses and carcinogenesis, but the only, though very important, finding was its association with melanoma. We have not focused our research just on vitamin D only, but it looks like we need to go further. (more…)
Aging, Author Interviews, Brigham & Women's - Harvard, Frailty, Geriatrics, JAMA / 22.09.2022

MedicalResearch.com Interview with: Ariela Orkaby, MD, MPH Geriatrics & Preventive Cardiology Associate Epidemiologist Division of Aging, Brigham and Women's Hospital Assistant Professor of Medicine, Harvard Medical School MedicalResearch.com: What is the background for this study? Response: As the population is living longer, there is increased risk of frailty and vulnerability. Frailty is defined as reduced physiological reserve and decreased ability to cope with even an acute stress. Up to half of adults over the age of 85 are living with frailty and preventative measures are greatly needed. We tested the effect of vitamin D and marine omega-3 fatty acid supplementation on the risk of developing frailty in healthy older adults in the US enrolled in the VITamin D and OmegA-3 TriaL (VITAL) trial. (more…)
Author Interviews, Brigham & Women's - Harvard, Endocrinology, Hip Fractures, NEJM, Osteoporosis, Vitamin D / 27.07.2022

MedicalResearch.com Interview with: Meryl S. LeBoff, MD Chief, Calcium and Bone SectionDirector of the Skeletal Health and Osteoporosis CenterDirector, Bone Density UnitDistinguished Chair in Skeletal Health and Osteoporosis Professor of Medicine, Harvard Medical School Endocrinology, Diabetes and Hypertension, Women's Health Brigham And Women's Hospital JoAnn E. Manson, MD, DrPH Professor, Epidemiology, Harvard T.H. Chan School Of Public Health Michael and Lee Bell Professor of Women's Health, Medicine, Harvard Medical School Chief, Preventive Medicine, Brigham And Women's Hospital Co-Director, Womens Health, Brigham And Women's Hospital   MedicalResearch.com:  What is the background for this study?  What are the main findings? Response: Osteoporosis is a major public health problem. Although supplemental vitamin D has been widely used to reduce the risk of fractures in the general population, studies of the effects of vitamin D on fractures, the most important bone health outcome, have been conflicting. Randomized controlled trials, the highest quality studies, from around the world have shown benefit, no effect, or even harm of supplemental vitamin D on risk of fractures. Some of the trials used bolus dosing, had small samples sizes or short study duration, and co-administered calcium. No large RCTS of this scale tested whether daily supplemental vitamin D (without co-administration with calcium) prevented fractures in the US population. To fill these knowledge gaps, we tested the hypothesis in this ancillary study to VITAL, whether daily supplemental vitamin D3 reduced the risk of incident total, non-spine and hip fractures in women and men in the US. (more…)
Author Interviews, Breast Cancer, Cancer Research, Race/Ethnic Diversity, Vitamin D / 26.04.2022

MedicalResearch.com Interview with: Katie M. O’Brien PhD Chronic Disease Epidemiology Group National Institute of Environmental Health Sciences MedicalResearch.com:  What is the background for this study?  What are the main findings? Response: Vitamin D may protect against breast cancer. Although women of color have lower average vitamin D levels than non-Hispanic White women, few studies have considered the role of race/ethnicity. In a sample of self-identified Black/African American and Hispanic/Latina women, we observed that vitamin D concentrations measured in blood were inversely associated with breast cancer, particularly among Latinas. These findings indicate that vitamin D may protect against breast cancer, including among racial/ethnic groups with low average circulating levels. (more…)
Author Interviews, JAMA, USPSTF, Vitamin D / 22.04.2021

MedicalResearch.com Interview with: Dr. Michael Silverstein M.D., M.P.H Professor of Pediatrics Director of the Division of General Academic Pediatrics Vice Chair of Research, Department of Pediatrics Boston University School of Medicine   MedicalResearch.com: What is the background for this study? What are the main findings? Response: Vitamin D is an important nutrient for keeping bones healthy, and it may also have a role in other aspects of good health. However, we do not have enough evidence to understand what levels of vitamin D people need to keep them healthy or what levels are too low. As a result, the Task Force determined there is not enough evidence to recommend for or against screening for vitamin D deficiency in adults who do not have signs or symptoms. It is our hope that with more research, we will be able to make a strong, evidence-based recommendation on screening for vitamin D deficiency in the future. (more…)