Allergies. Allergies can cause a runny nose, sneezing, itching, or coughing. Food allergies are the most common in babies, but pets and insects can also cause an allergic reaction. Learn about baby allergies and how to ease them. 1  Facebook. 2  Pinterest.
But redheads as a group have more in common than only their hair color -- certain health conditions appear to be more common among people with red hair. Here are five health risks linked with being a redhead. About 1 to 2 percent of the human population has red hair.Redheads have genes to thank for their tresses. Research shows red hair usually results from a mutation in a gene called MC1R, which codes for the melanocortin-1 receptor. The pigment found in redhair that makes it red is called pheomelanin.ut redheads as a group have more in common than only their hair color -- certain health conditions appear to be more common among people with red hair. Here are five health risks linked with being a redhead. About 1 to 2 percent of the human population has red hair. Redheads have genes to thank for their tresses.
ScotlandsDNA believes that everyone who carries one of 3 variants of the red-hair gene is a direct descendant of the first redhead ever to have it â two variants originating in West Asia around 70,000 years ago, and a younger variant originating in Europe around 30,000 years ago.cotlandsDNA reckon that both Cysteine-red and Tryptophan-red originated in West Asia around 70,000 years ago, which would put the founders amongst the earliest generations of modern humans to live outside of Africa. Histidine-reds descend from a European who lived around 30,000 years ago.