Kay started his study Biomedical sciences at Maastricht University in 2010. During his bachelor, he chose to do a major in Biological health sciences. In the first year of his master’s program he performed an internship at the department of Human Biology within the group of Prof. Wouter van Marken-Lichtenbelt, where he investigated the effect of bile acid supplementation on brown adipose tissue activity and energy expenditure. In the second year of his master he carried out an internship under the supervision of Prof. Patrick Schrauwen, which resulted in a master thesis on the relation between skeletal muscle mitochondrial function and hepatic lipid accumulation in people with compromised metabolic health. In 2015 he completed his master in Biomedical sciences, with a specialization in Nutrition and Metabolism. In July 2016, he started his PhD at the department of Human Biology under the supervision of Dr. Vera Schrauwen-Hinderling and Prof. Patrick Schrauwen. During his PhD, Kay will focus on the determinants of liver fat and its relation to insulin sensitivity.