The study will be done in parallel-design, randomized fashion, with healthy human volunteers aged 20 - 69 years. Exclusion criteria will be as follows: strict vegan, regular user of fish oil or other food supplements, extreme sports, inflammatory bowel disease, colon irritable, celiac disease, continuous antibiotics or less than three months of the latest antibiotics use, type 2 diabetes and hormonal, liver or kidney disease. Duration of the intervention will be 12 weeks.