Effects of Negative thoughts The moment negative thought enters in your mind, 1, Your body releases acid. 2, Your aura decreases. 3, Your resistance power decreases. 4, Your system's functions are affected. 5, Your heart beat increases. 6, Your blood pressure increases. 7, Unwanted hormones are released. With that negative thought you may or may not harm others...but you definitely harm yourself!!! Think positive remain healthy.