DNA extracted from the remains of a 7,000 year old man's tooth has helped researchers find out more information about our ancestors, according to a study published by the journal Nature.

Based on what was extracted from the tooth, the man had dark skin and blue eyes. The man apparently maintained a hunting and gathering lifestyle and had a particular intolerance for milk, reminiscent of what we would describe as being lactose intolerant. In addition, he was said to have a good immune system.

The era in which he lived was the Mesolithic period, described by NBC News as a "transitional time" and lasted from roughly 10,000 years ago until 5,000 years ago. This is said to be the time period when people started the process of settling more as opposed to being nomadic.

The thing that surprised most people was that the skin was not linked to a European blood line but rather African. While Carles Lalueza-Fox, who is part of the research team from the Spanish National Research Council, said that people are unable to determine which exact shade the man was, they are still able to tell that he had darker skin.

"Even more surprising was to find that he possessed the genetic variations that produce blue eyes in current Europeans, resulting in a unique phenotype in a genome that is otherwise clearly northern European," Lalueza-Fox said.

According to a press release, the cave where the remains were found is one that possesses a great atmosphere to preserve the human remains and it inevitably became a reason why researchers were able to find out so much information.

What do you think about this finding? Does it make a difference in the way we perceive human history? Let us know what you think in the comments section below.