According to Sciences 360, hormones affect many facets of human behavior, including emotions, health, sexual attraction and even weight. Sciences 360 defines hormones as chemicals created by a cell or organ that communic... More » Health Medical Ranges & Levels

The University of Washington explains that the endocrine system secretes hormones and other substances into the blood stream in order to control behavioral processes, such as responses to stress. Additionally, the endocr... More » Science Human Anatomy Glands & Hormones

Instincts are autonomic responses to external stimuli or various environmental conditions. These innate features are both physically and psychologically built into the human organism and are the driving force for many in... More » World View Social Sciences Psychology
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The five types of human behavior, according to My PTSD are passive-aggressive, assertive, aggressive, passive and the lesser-known alternator, a pattern of behavior where an individual switches from one type of behavior ... More » World View Social Sciences Psychology

TSH stands for thyroid stimulating hormone, which is a hormone released by the hypothalamus to stimulate the release of hormones from the thyroid gland. The TSH level refers to the amount of TSH found in the blood. A per... More » Health Medical Ranges & Levels

Thyroid hormones T3 and T4 are in a normal range at 3 to 11 and 4.5 to 11.2 micrograms per deciliter of blood, respectively, according to Medline Plus. When hormone levels are above 8 to 11 micrograms, this is considered... More » Health Medical Ranges & Levels

Known as the dawn phenomenon, the body releases various hormones between 3 a.m. and 8 a.m., which in turn causes blood sugar levels to rise as bedtime insulin resources are depleted, according to WebMD. The hormones caus... More » Health Medical Ranges & Levels