In a simpler time, we were told to avoid foods that were high in fat. But then we learned that there are many different types of fats, including some, like olive oil, that are good for you.n a simpler time, we were told to avoid foods that were high in fat. But then we learned that there are many different types of fats, including some, like olive oil, that are good for you.
1 One out of every 10 people entering a hospital needs blood. 2  Just one pint of donated blood can help save as many as three people's lives. 3  The average adult has 10 pints of blood in his or her body.
One unit of blood equals is 450ml (just under a pint). (2) âIf you pass the test for anaemia, you can donate one unit of blood. Firstly, that phrase âjust under a pintâ is potentially misleading. 450 ml is in fact 21% âunder a pintâ (assuming a UK pint of 568 ml) which is quite significant.