Current research

I am currently involved in a number of research projects:

A comparative study of vitamin D status, dietary vitamin D intake, supplementation use and habitual sunlight exposure in UK-dwelling South Asians and Caucasian

The effect of feeding and exercise on bone turnover markers (AWRC affiliated)

The impact of food insecurity on families attending the complexities of excess weight clinic (Funded by the Sheffield Children's Hospital Research and Innovation Fund)

An NIHR funded project that aims to understand the scale and scope of 'Dark Kitchens' within the North of England, and explore how these businesses could be identified and managed in line with council priorities.

Selected research

My recent publications are: 

Schwartz, J. B., Gallagher, C., Jorde, R., Berg, V., Walsh, J., Eastell, R., Evans, A.L., Bowles, S., Naylor, K. E., Jones K. S., I. Schoenmakers, M. Holick, E. Orwoll, C., Nielson, M. Kaufman, G., Jones, R., Bouillon, J. Lai, D. Verotta, D., & Bikle D. (2018) Determination of free 25(OH)D concentrations and their relationships to total 25(OH)D in multiple clinical populations. The Journal of Clinical Endocrinology and Metabolism, DOI: 10.1210/jc.2018-00295

Walsh, J. S., Bowles, S., & Evans, A.L. (2017). Vitamin D in Obesity. Current Opinions in Endocrinology Diabetes & Obesity, 24, 389-394.

Walsh, J. S., Evans, A.L., Bowles, S., Naylor, K .E., Jones, S. I., Schoenmakers, R. M. Jacques &. Eastell R. (2016). Free 25-hydroxyvitamin D is low in obesity, but there are no adverse associations with bone health. American Journal of Clinical Nutrition, 103, 1465-1471.

Collaborators and sponsors 

Sheffield Children's Hospital Research and Innovation Fund

National Institute for Health Research (NIHR)

Advanced Wellbeing Research Centre

Anglia Ruskin University