I’m not sure that I understand the question, as I know many Indians, and none of them have dark circles under their eyes to any degree more noticeable than a Caucasian. Please remember that blood becomes red due to an exposure to oxygen, and it is not that color in your veins. The skin under your eye is much thinner, and is very translucent. According to About.com (http://allergies.about.com/od/darkcircles/a/aa071304.htm), the top causes for dark circles under the eyes are: 1.) HEREDITY Like varicose veins, dark circles under the eyes are usually an inherited trait. If you have dark circles, there is a good chance that others in your family also have them. The skin under the eye is very thin. When blood passes through the large veins close to the surface of the skin it can produce a bluish tint. The more transparent your skin, also an inherited trait, the darker the circles appear. 2.) EXPOSURE TO THE SUN Even in darker skinned people, exposure to sunlight, especially during the summer
It is not correct to say that East Indians have dark cicles under their eyes. People world over have this problems due to various reasons. I have traveled eastern india widely but I have not seen what you have written. Any way the reasons for getting dark circles are – There are several reasons why this happens, says Dr. Kucy Pon, a dermatologist with U of T’s Division of Dermatology and Sunnybrook and Women’s College Health Sciences Centre. “It’s commonly caused by very prominent veins which lie below the skin under the eye,” she explains. “Under the eye, the skin is very thin and delicate. With aging and sun damage, that skin becomes even thinner and more translucent allowing those veins to become more visible which gives the appearance of dark circles.” The delicate skin in this area can also become wrinkled and baggy as people age. “When light hits the loose skin under the eye, it creates shadows that give a dark appearance mimicking circles,” says Pon. And people with darker skin
I am East Indian, and have also noticed this among East Indians, especially in those of a slightly darker tone. A lot of the fair skinned east Indians from the North do not get dark circles. I have also noticed dark circles in Ethiopians and some African Americans. Me and my father have really bad dark circles under our eyes. Maybe a lot of us East Indians have thinner skin under the eyes (and possibly throughout the body). Remember that we have a population of 1.1 billion who had to survive on land that is the size of one-third of America, where there are only 300 million people! Back in the day, we weren’t a billion plus in population, but the current billion plus come from that genetic pool that got less food and ate limited meat. Maybe not eating meat is why Indians hardly get certain cancers (colon, stomach) that are common in the west, but also why we suffer from such things as dark circles and diabetes (resulting from a high carb, salty and fatty Indian diet). Our skin color als