We’ve heard it before:  firstly, that the human body is made up of 75% water and, secondly, that we should drink eight glasses of water a day – but, did you know how dehydration actually impacts your body?  The team at Memolition have posted this comprehensive infographicdetailing why dehydration can cause fatigue, weight gain, skin disorders, premature ageing and a wide range of illnesses.  For example, dehydration thickens your blood causing high blood pressure, but, also leads to increased cholesterol production as your body tries to stop water loss from cells.