Hypertriglyceridemia is one of the most prevalent lipid profile disorders and is linked to a large proportion of mortality in Mexico and around the world. Various international treatment guidelines for hypertriglyceridemia have suggested the consumption of foods rich in n-3 polyunsaturated fatty acids or their intake through supplementation as a complement to lifestyle changes. However, adherence to the consumption of foods and supplements containing these fatty acids is often limited due to lack of acceptance or unaffordability. For this reason the objective of the study is to evaluate the effect and adherence to the consumption of foods rich in n-3 polyunsaturated fatty acids (PUFA) (pumpkin and chia seeds and salmon) and n-3 PUFA supplement during four weeks of a follow up dietary intervention determined by triglyceride concentration and lipoprotein composition in people with hypertriglyceridemia. The study is divided into two phases. In the first, participants' diets will be standardized, providing them with dietary recommendations for four weeks. Participants who maintain triglyceride levels \>200 mg/dL despite the recommendations will be invited to a second phase: a randomized controlled clinical trial consisting of a dietary intervention with a four-week follow-up. Participants will be randomized into three treatment groups: 1) isocaloric diet and Eicosapentaenoic acid (EPA) + Docosahexaenoic acid (DHA) supplementation; 2) isocaloric diet including salmon; 3) isocaloric diet including chia and pumpkin seeds. The effect of the dietary intervention will be assessed by determining lipid composition and lipoprotein analysis, while adherence to n-3 PUFA consumption will be measured by serum fatty acid profile analysis.