Final answer:
A sedentary lifestyle increases the risk of type 2 diabetes, cancer, cardiovascular disease, stroke, and hypertension because it can lead to obesity, high blood pressure, and high blood glucose levels, which are part of metabolic syndrome.
Step-by-step explanation:
Among the risk factors listed, a sedentary lifestyle increases the risk of several noninfectious diseases, including type 2 diabetes, cancer, cardiovascular disease, stroke, and hypertension. A sedentary lifestyle contributes to obesity, high blood pressure, unbalanced blood lipid levels, and high blood glucose levels, all of which are components of metabolic syndrome. This syndrome is a major risk factor for cardiovascular diseases and type 2 diabetes. Additionally, a lack of physical activity is linked to an increased risk of certain cancers and plays a significant role in the development of hypertension and stroke.Eating seafood regularly does not universally increase the risk of these conditions, and, in fact, it can be part of a healthy diet when consumed in moderation. Diets high in salt are specifically linked to an increased risk of hypertension but do not increase the risk of all conditions listed to the same extent as a sedentary lifestyle.