Food and Cold Storage.

From a medical news website:
Foods kept in cold storage then sold as 'fresh' can contain end products known to adversely affect kidney function, Australian researchers warn.
Associate Professor Josephine Forbes, head of Glycation and Diabetes Research at Baker IDI Heart and Diabetes Institute, suggested food from cold storage could be harmful to the kidneys in at-risk people, and “perhaps contribute to the development of diabetes”. The effect was related to the presence of Advanced Glycation end products (AGEs), she said – found in foods that are processed and contain high levels of sugar and fat, but also in foods that have been in cold storage for many months. Professor Forbes told Endocrinology Update her team’s research, due to be published this year, showed “dramatic differences” in insulin sensitivity and also in insulin secretions related to the effects of AGEs in obese people at risk of developing type 2 diabetes.
The study participants were put on a short-term diet that was low in AGEs, and then after a wash-out period they were put on another diet high in AGEs.
According to Professor Forbes, the study found AGEs affected a number of inflammatory processes in the cohort.
“We’re trying to get the message across that if you’re obese and you’re trying to eat healthily you may still unwittingly be taking in AGEs [in ‘fresh’ foods],” she said. “Our ultimate goal is to make overtures to the government to change regulations about length of cold storage and labelling of processed food for AGEs,” she said.