It has previously been observed that increased fish intake improves the metabolic health of overweight and obese adults, and animal protein improved metabolic health of obese rats. In this project the investigators will investigate whether increased intake of fish or meat improves metabolic health in overweight/obese adults aged 20-55 years when replacing processed food. The hypothesis is that increased intake of unprocessed fish or meat will improve metabolic health in adults as measured by glucose tolerance, lipid metabolism and inflammatory markers.

Inclusion Criteria:

• BMI > 27
• 20-55 years
• healthy

Exclusion Criteria:

• diagnosed diseases such as diabetes, CVD, intestinal diseases, arthritis
• prescription medications affecting the metabolism of glucose, lipids or the immune system
• use of supplements containing long chain n-3 fatty acids
• high intake of fish
• food allergy