how different people have different body colours ?

In this article we will tell you why different people have different colur and some breify discussion hope you will enjoy it 

When utravoilet rays hits our skin it affects each of us a little different.

It all centres about melanin the pigment that gives skin and hair its colour.

This comes from skin cells called melenocytes.

There's two sides

1. There's eumelanin, which gives rise to a range of brown skin tones as well as black, brown and blond hairs

2. Pheomelanin , which causes the reddish browns of freckles and red hair.

Melanin protect us from highly dangerous UV rays of sun.

Melanin also give colour to our eyes 

Those people who have less melanin in thier body they are known as alkinos.

These melanin types and melanin amount present decides the colour of our skin .

UV rays is dangerous for our skin but it also help our body to make vitamin D which makes our bones strong and some important minerals like calcium, magnesium, iron, phosphate, zinc to take.

The lack of vitamin D makes our body more used up and bones are not enough strong so we get rickets like diseases.

So the people whose skin colour is dark go to the down temperature palce thier having of bones diseases chances are high.

The people whose skin colour is bright go to the hot place thier having of skin cancer chances is high.