Neurological diseases affect the nervous system, including the brain, spinal cord, and peripheral nerves that carry signals throughout your body. These conditions can disrupt movement, thinking, mood, ...

Cannabis drug tests measure tetrahydrocannabinol (THC) and its metabolites, which can stay in your body long after the “high” fades. Detection ranges from hours in blood or saliva to weeks or months ...

Health policy is the set of decisions and plans, developed by governmental or nongovernmental agencies, designed to promote specific health-care objectives. Policies can be directed at individuals, ...