Drugs and brain - Research Paper Example

It is advisable to take legal drugs for recreation since the bureau of standards checks them whereas illegal drugs may be unfit for human consumption since no standardization is done. Drugs acts on the brain by altering the normal functioning of the body which can be either sudden or with time. Normally, the brain communicates through neurotransmitters, which are recycled once they have performed their function. When a drug is introduced in to the human body, it leads to excess transmitters in the brain since it inhibits their recycling and this result to exaggerated functioning of the brain leading to the visual or psychological effects of the drug.

Drugs are chemical substances that alter the normal functioning of the body. People take drugs with different motives, some follow doctors prescription while others take drugs for pleasure. Drugs can be either legal or illegal. Legal drugs include medicines, which are taken to relief the body from pain and illnesses and recreational drugs like beer, and cigarettes, which are taken for pleasure. Drugs can either be manufactured like or obtained naturally. For example, medicines like Aspirin and paracetamol and recreational drugs like beer and heroine are manufactured drugs while most herbal medicines and recreational drugs like tobacco are obtained naturally (Watts, 2004).

The human brain is part of the nervous system enclosed in the cranium and consists of a soft convoluted mass of gray and white matter weighing around three pounds. The brain is the most necessity in human beings since it controls every functioning of the body. The human brain is divided into three main parts, the cerebrum, the cerebellum, and the brain stem and each part performs a specific function. The cerebrum is the outermost part of the brain and divided in to four sections called lobes.

Lobes are responsible for processing signals from our senses thus enabling us to see, smell,