What Are Bad Carbohydrates?

Bad carbohydrates are basically the ones which taste the best !  Generally, they are the sugary, refined carbohydrates which are found in chocolate, biscuits, cakes, sweets and white flour and rice.
Processed and refined pastas, flour and rice are all pretty 'naughty' carbohydrates as well.  
This is due to the refining process, which actually removes the vast majority of vitamins and minerals from the foods.  This results in the foods having the effect of sugar when they hit the bloodstream.
They deliver a real sugar 'hit' (which is why many of us are so fond of them) and they cause blood glucose disturbances.  Then after the high of the sugar wears off, we then crave the same hit again, so want more of these types of carbohydrates.  In extreme cases, this can lead to mood swings.
Even worse, any excess bad carbohydrates are stores as fat in the body, leading to us putting on weight, particularly around the stomach and middle.  
So they are pretty bad in nutritional terms !

Unhealthy food which have high sugar and can damage to the body