Info-impact

The impact of information on the human psyche is very intriguing.  Fear, happiness, sorrow  – you name the emotion and you will find that any piece of information once consumed and digested, will evoke a different emotion in each person.  The human brain has this immense capability to pick up a piece of information and interpret it against the sum total of all other knowledge, notions and assumptions that has already been acquired leading to a series of actions driven by emotions that were triggered by the recently acquired piece of information. In todays world, where information sources are numerous, does the brain work itself out trying to interpret everything that it receives? Is that the reason for high stress levels?