Long Term Supplementation With Retinyl Palmitate (Vitamin A) And The Risk Of Bone Fractures: A Population Based Study.
Funder
National Health and Medical Research Council
Funding Amount
$167,707.00
Summary
Osteoporosis is a major health problem in Australia and other western industrialised countries where populations are increasingly ageing. In Australia, the number of hip fractures is expected to increase by 36% between 1996 and 2006, owing to the rise in elderly aged 85 years and over. This is in contrast to projections in Europe and North America, where the number of hip fractures are expected to double by 2026 and then stabilise. Clarification of the role of vitamin A in bone health is pertine ....Osteoporosis is a major health problem in Australia and other western industrialised countries where populations are increasingly ageing. In Australia, the number of hip fractures is expected to increase by 36% between 1996 and 2006, owing to the rise in elderly aged 85 years and over. This is in contrast to projections in Europe and North America, where the number of hip fractures are expected to double by 2026 and then stabilise. Clarification of the role of vitamin A in bone health is pertinent, given that the popularity of supplement use has increased markedly in western industrialised countries over the past two decades. Around 37% of the adult population in Australia is thought to take a supplement regularly and figures range from 28% to 54% of adults in the US, with women and adults aged over 49 years being more likely to use supplements. Furthermore, the fortification of food with minerals and vitamins is increasing. For all of these reasons, is it imperative that the role of vitamin A in inducing fractures be clarified. Results from this study will contribute to knowledge about the safety of retinol and beta carotene supplements in relation to bone health, which is especially relevant to people at risk of osteoporosis, and people who take vitamin A supplements. We will also be able to clarify the upper levels of dietary retinol, beta carotene and vitamin A intake beyond which fracture risk increases. Because of the age range of subjects in our study, our results should be applicable to the whole population, not only the elderly or post menopausal. The results of our study will be useful to agencies such as Food Standards Australia and New Zealand which regulates our food supply.Read moreRead less
Determining The Role Of Vitamin D In The Development Of Asthma And Allergic Diseases In High Risk Families
Funder
National Health and Medical Research Council
Funding Amount
$351,127.00
Summary
Allergic diseases like asthma, eczema and hay-fever, prevent our children from getting a healthy start to life, and we don’t know how to prevent these conditions. Vitamin D levels may be critical in the development of childhood asthma and allergies, and they can be easily modified! Using a group of 620 children who we have followed for 20 years, we will identify the role of vitamin D levels in the development of allergic conditions, and factors that modify these relationships.
Enterovirus, Vitamin D Status And Inflammation At The Clinical Onset Of Type 1 Diabetes In Childhood
Funder
National Health and Medical Research Council
Funding Amount
$410,542.00
Summary
Type 1 diabetes is a serious disease that is increasing in incidence among Australian children. This project will build on an exsisting study to provide new information on the role of enteroviral infection, vitamin D status and the associated inflammatory changes in blood at the onset of disease.
The Role Of Vitamin D In Determining Risk Of Developing Juvenile Idiopathic Arthritis
Funder
National Health and Medical Research Council
Funding Amount
$586,485.00
Summary
Juvenile Idiopathic arthritis (JIA) is an autoimmune disease that occurs in up to 1/250 Australian children. Growing evidence suggests that low vitamin D increases risk of autoimmune disease, yet no-one has looked at its effect on JIA. We will compare vitamin D in blood, and also exposure to sun through life, between children with and without JIA. We will also look to see if vitamin D interacts with autoimmune disease risk genes. The outcomes of this study will help to inform policy on the impor ....Juvenile Idiopathic arthritis (JIA) is an autoimmune disease that occurs in up to 1/250 Australian children. Growing evidence suggests that low vitamin D increases risk of autoimmune disease, yet no-one has looked at its effect on JIA. We will compare vitamin D in blood, and also exposure to sun through life, between children with and without JIA. We will also look to see if vitamin D interacts with autoimmune disease risk genes. The outcomes of this study will help to inform policy on the importance of sun exposure to health.Read moreRead less
Does Vitamin D Supplementation Reduce Mortality For Older Adults?: A Pilot Trial
Funder
National Health and Medical Research Council
Funding Amount
$443,311.00
Summary
Studies suggest that people with low vitamin D may have increased risks of some chronic diseases and early death. This has prompted calls to introduce population-wide vitamin D supplementation, although there is no good evidence from clinical trials. In a landmark 2008 report, the International Agency for Research on Cancer called for randomised trials of high-dose vitamin D supplementation. We plan to pilot such a trial, to inform implementation of a large-scale chemoprevention trial.
Sun Exposure, Vitamin D And Photohealth Over The Lifetime
Funder
National Health and Medical Research Council
Funding Amount
$622,655.00
Summary
Australia is a sunny country with a diverse population. Inappropriate sun exposure for skin type leads to skin cancer (mainly in the fair-skinned) and vitamin D deficiency (particularly in the darker-skinned). Potential benefits of sun exposure are broader than vitamin D production, but remain ill-defined. There are few data on appropriate sun exposure for children. This research fellowship builds the evidence to guide sun exposure messages.
Novel Molecular Markers Of Lung Cancer Risk And Survival
Funder
National Health and Medical Research Council
Funding Amount
$824,765.00
Summary
Lung cancer remains the most lethal cancer worldwide, yet little is known of the risk factors beyond that of tobacco smoking and certain occupational exposures. We have assembled a large international consortium comprising 24 cohort studies and over 10,000 to validate associations between B-vitamins and lung cancer risk particularly in never and former smokers. We propose to expand this study and use the Melbourne Collaborative Cohort Study and the rest of the consortium to identify novel biomar ....Lung cancer remains the most lethal cancer worldwide, yet little is known of the risk factors beyond that of tobacco smoking and certain occupational exposures. We have assembled a large international consortium comprising 24 cohort studies and over 10,000 to validate associations between B-vitamins and lung cancer risk particularly in never and former smokers. We propose to expand this study and use the Melbourne Collaborative Cohort Study and the rest of the consortium to identify novel biomarkers of risk and survival.Read moreRead less
My research aims to (1) find ways to minimise the impact of pancreatic cancer through improved prevention, diagnosis and management; (2) contribute to the vigorous international debate about the benefits of vitamin D and the best way to balance the harms and benefits of sun exposure.