– poor coordination and distorted thinking
As alcohol is absorbed into the bloodstream, there are notable effects on our thought processes, body and behavior that can cause accidents. The current UK drink drive limit is 80 milligrams of alcohol per 100 millilitres of blood. Above this level, alcohol can make it difficult to coordinate body movement and thought processes can be distorted. Plus the part of brain that controls impulses can become delayed or over-ridden. This affects our decision-making. The combination of poor coordination, distorted thinking and impaired decision-making mean the more you drink, the more likely it is that you’ll have an accident.
This addictive nature of this substance is reinforced by its abilities in creating intensely pleasurable feelings. Heroin accomplishes this by binding to opioid receptors in the body. Once the chemical interaction has taken place, the affected nerve cells are prompted to release a neurotransmitter called dopamine . Dopamine is a special molecule--and important in mediating feelings of pleasure that are rewarding to the user. It's these sensations of reward that can kickstart and later reinforce a growing addiction, as the user continually seeks to repeat the behavior - in this case, heroin use - that lead to them in the first place.