Vikings may be best known for marauding and pillaging but there is one Nordic behaviour that is worth copying.
Sticking to a traditional Nordic diet can support brain health in old age and could help fight off dementia.
The diet is high in fish, non-root vegetables, fruit, rice and chicken, washed down with plenty of water and tea.
In good news for drinkers, the diet also includes a light to moderate consumption of wine.
Sticking to a traditional Nordic diet, who followed a Nordic diet, can support brain health in old age and could help fight off dementia
People sticking to the so-called 'healthy Nordic diet' should avoid eating too many root vegetables, potatoes, refined grains, butter, sugar and fruit juice.
How was the study carried out?
A Swedish study of 2,223 people carried out by the Karolinska Institute looked to see whether the diet had any effect on brain function.
They found that being relatively good or very good at sticking to the diet was linked with a smaller decline in memory and thinking skills.
Or you could eat Mediterranean
Another study by the University of California, San Francisco, of 5,907 healthy older people found those who stuck to the Mediterranean diet – which high in vegetables and olive oil and low in meat and dairy – were around 35 per cent less likely to perform poorly in cognitive tests than those who did not.
It backs up several earlier studies showing the Mediterranean