Seaweed was once a common part of the European diet, new research shows.

Scientists say that seaweed was a staple food for people living in coastal areas of Europe during the Mesolithic period, which lasted from around 10,000 BC to 5,000 BC.

The study, published in the journal "PLoS One," analyzed the remains of food found at archaeological sites in Denmark, Germany, and the United Kingdom.

The researchers found that seaweed was one of the most common foods eaten by Mesolithic people, along with fish, shellfish, and meat.

They say that seaweed was likely eaten fresh, dried, or cooked.

The study also found that seaweed was used as a medicine and as a source of fertilizer.

The researchers say that the decline in seaweed consumption in Europe is likely due to the rise of agriculture.

As people began to grow their own food, they no longer had to rely on seaweed as a source of sustenance.

However, seaweed is still an important part of the diet in many parts of the world, especially in Asia.

Seaweed is a nutritious food that is high in vitamins, minerals, and fiber.

It is also a good source of antioxidants.

Seaweed is now being rediscovered as a healthy and sustainable food source.

It is becoming increasingly popular in Europe and North America, and it is being used in a variety of dishes, from salads to soups to sushi.