Most humans have RH positive blood, meaning they carry a gene originating from the rhesus monkey. Humans are believed to have evolved from a similar ancestor.

But 10-15% of people do not carry this gene, which means there is a small amount of people on the planet who are RH negative. Such people lack not only that rhesus monkey gene but the proteins that come with it as well.

Individuals with the RH-negative blood type often have the following characteristics:

  • Higher IQ
  • Blue, green or hazel eyes
  • Reddish hair
  • Piercing eyes
  • Empathic qualities
  • Sensitivity to heat
  • Unexplained phobias
  • Highly tuned senses

So if individuals with RH negative blood didn’t evolve from the same ancestor as the rest of us, where do they come from?


Many people believe those with RH negative blood are the result of ancient humans having mated with visitors from outer space.

RH negative blood and RH positive blood are extremely incompatible. This is most clearly shown in the relationship between a RH negative mother and a RH positive unborn child. (This happens when the mother is RH negative and the father is RH positive.) Oddly enough, mothers with RH negative blood naturally create antibodies that will attack the red blood cells of any RH positive children. This condition is known as RH incompatibility and can be prevented with RH immune globulin. RH immune globulin is produced by some people like James Harrison who has saved the lives of about 2 million babies through blood donations alone!

Although extremely rare, some babies do not survive RH incompatibility.

Humans have long suspected alien visitation.

Needless to say, said aliens were likely greeted with a bit more tenderness than this.

Ancient history is littered with drawings and writings depicting alien ships visiting planet earth. Everyone from Apollo astronauts to former defence ministers believe aliens have indeed visited our planet.

This new theory raises some pretty interesting questions regarding these ancient alien visitation beliefs. Namely, if humans mated with aliens, that could mean extraterrestrials have a more or less similar body structure and composition that would allow only subtle differences – such as hair and eye color and blood type.

Of course, there are skeptics regarding the notion that RH-negative blood comes from aliens.

Some people believe RH-negative blood is simply the result of a genetic mutation caused by an external factor such as increased exposure to UV light.

Of course, this theory raises new questions on its own. For example:

  • If RH-negative blood is a simple mutation, why do so few people on the planet have it?
  • How much increased UV exposure would be required to produce such a genetic mutation? Is it feasible that someone would receive that much exposure through day-to-day life on Earth?

What do you think? Are humans with RH-negative blood the descendants of ancient aliens? Weigh in down in the comments.

The Tech Museum of Innovation – Collective Evolution – – – – RH Negative Registry – National Geographic