(Health Secrets Newsletter) IQ stands for Intelligence Quotient. Contrary to common misconception, IQ does not measure a person's actual intelligence, but rather is measurement of one's problem solving abilities. It has long been thought that a person's IQ remains fairly stable from very early in life. However, new studies have found just the opposite, indicating that IQ can be increased by as much as 20% or more with proper diet, lifestyle, mental exercises and more.