How much food do we really really need?

As I down my salad( made up of avocados, pumpkin ,corn ,Chicken and every other vegetable that is good for me ) while sam gets to enjoy the Bagel i bought with Bacon!
​ I wondered how much food do we really need ? 
 
When do I stop eating the 'one last chip ' or paying visit to the fridge to take another spoonful of Nutella? 
 
Did you know, that your stomach is approximately the size of your fist ? I'm still amaze how much food I can put in it before my belly expire and my even my gym tights cry in vain. 
 
At the moment my food Look something like this!
9am-coffee with milk 
12 -sweet potato /fish / vegetable 
3-left over from my 12 o clock meal 
6-to much nuts and a other coffee if I'm dying 
8-avacado ,fish ,corn ,any vegetable 
9pm-tea and milk /potato chips or tapioca chip /chocolate or both if my conscious is not clear ! 
 
So how much food should you eat? 
 
How much food you should eat depends on many factors, which includes your age, height, sex, health status, daily calories output, activities engages, genetic makeup, body composition etc etc..
 
It also relates to your daily calorie intake requirement. If you consume more each day than you use up and you will usually put on weight, consume less and the opposite will happen well this is a general outlook of calories balance, common sense right?
 
Below are some general daily calorie requirements for males and females. Low active level includes from 30-60 minutes of daily moderate activity, such as walking at 5-7 km/h (3-4 mph). Active level includes at least 60 minutes of daily moderate activity. ( taken from www.medicalnewstoday.com)

 
According to the United Nations' Food and Agriculture Organization (FAO), the average person's minimum calorie requirement per day globally is approximately 1,800 kilocalories (7,500 kJ)

Now lets look at the estimate breakdown of calories consume, i'm not great with my geography, therefore knowing the continents helps. Higher up on the map closer to the Arctic Ocean people consume more calories due to the weather. It is also safe to say that the third world countries consume less as compared to their other counterparts. With this it makes sense in regards to the obesity rate found in different Countries. Interesting isn't it ? Well enough of sounding smart for the day, time to have some tea and rice crackers now. xx