Wiktionary (0.00 / 0 votes) Rate this definition: electromagnetic spectrum (Noun). The entire range of wavelengths of all known electromagnetic radiations extending from gamma rays through visible light, infrared, and radio waves, to X-rays.
Excessive alcohol can damage the immune system because the alcohol will prevent nutrients from feeding your immune system. The alcohol is absorbed into your bloodstream through your stomach. Once in the bloodstream, alcohol will reduce the white blood cell count in the body.
Brain Chemical Imbalances after Long-Term Alcohol Use. Alcohol has widespread effects on the brain and can affect neurons (nerve cells), brain chemistry, and blood flow within the frontal lobes of the brain. Neurotransmitters (chemical messengers in the brain) are affected by long-term use of alcohol. When a person who is dependent on alcohol stops drinking, chemical responses create an overexcited nervous system and agitation by changing the level of chemicals that inhibit impulsivity or stress and excitation.