Why do some people have freckles and what causes them?

Answer 1

There are actually 2 types of freckles, Ephiledesand Lentigines. Ephilides is a genetic trait*, found in people with fair skin and red hair. Lentigines are formed after long years of exposure to the sun. Anybody who doesnt have freckles and are under the age of 19 either a) Doesn't go outside much or b) doesnt carry the genetic trait* *The genetic trait is the MC1-R gene, which is dominant

Answer 2

In brief, no.

In more detail, some research suggests that particular genes are responsible for the development of freckles (ephelides).

As nearly all individuals with ephelides were carriers of at least 1 MC1R gene variant, the authors proposed that MC1R gene variants may be necessary to develop ephelides, and may play a less important role in the development of solar lentigines.
Just about any racial group is capable of producing freckles but the presence of specific genes is necessary. As such, not every individual is capable of producing freckles.

For more details on the relevant study, visit the website at the related link shown down below.

Answer 3

People have freckles because of:

1) Genes (I have a lot of freckles because my family does and I'm of irish descent, so you will see a lot of irish people with freckles).

2) the sun - some people get tan, but people like me get freckles! Many people who are pale get freckles.

3) Some "freckles" are sun spots which can cause skin cancer, but regular freckles are fine, and are just a part of peoples appearance'

And if you are talking about freckles that old people have...

I have no idea...

Answer 4

Freckles are just groups of skin cells the have extra pigment in them; they do not appear to serve an evolutionary purpose and are probably just an accidental byproduct of human Biology.

Answer 5

you get them from the sun