The Baltic Sea diet is a research-defined healthy Nordic dietary pattern emphasising whole grains such as rye, oats, and barley; local fruits and berries including bilberries, lingonberries, and apples; root vegetables; fatty fish like salmon, herring, and mackerel; and rapeseed oil. Red and processed meats, sweets, and saturated fats are consumed sparingly.
Evidence from systematic reviews and meta-analyses generally supports small cardiometabolic benefits, though confidence in findings ranges from low to moderate. A meta-analysis of 15 prospective cohort studies involving over one million participants estimated reductions of 7% in total cardiovascular disease incidence, 26% in cardiovascular mortality, 12% in coronary heart disease incidence, 13% in stroke incidence, and 9% in type 2 diabetes incidence across observed Nordic diet score ranges.
Across six randomised trials involving 717 adults with cardiometabolic risk factors, pooled findings showed reductions of 0.26 mmol/L in LDL cholesterol, 2 kg in body weight, 7.83 pmol/L in fasting insulin, and 3.35 mmHg in systolic blood pressure. No effects were found for HDL cholesterol, fasting glucose, or C-reactive protein.
The Baltic Sea Diet Score (BSDS) is a research index scoring nine components, including Nordic fruits, vegetables, whole grains, low-fat milk, fish, fat ratios, and alcohol intake. Notably, sodium is not directly scored, so high adherence does not necessarily indicate low sodium intake.
Practical challenges include limited availability of traditional Baltic foods outside Nordic regions. However, the high-fibre, unsaturated-fat, plant-forward, and low-processed-meat principles are transferable across food cultures. The Global Burden of Disease Study 2023 identified high processed-meat intake and low fruit and whole grain consumption as leading dietary risks in Baltic and Nordic countries.
Source: News Medical (2026)
