Sentence:  Education has a positive effect on adherence to recommended diet and <WSD>glycemia</WSD> regulation in diabetes patients after four-week follow-ups. However, after two years, participants showed a decrease in adherence to recommended diet and increased <WSD>glycemia</WSD>. 
Meaning of the word marked with <WSD> tags:  Presence of glucose in the blood (which is always true), and  average concentration thereof over time, and its regulation; in this sense, glycemia is hypernymic to euglycemia, hyperglycemia, and hypoglycemia, and a mention of glycemia is a reference to blood sugar regulation and degree or quality thereof.