Blood alcohol concentration (BAC) refers to the amount of alcohol in your bloodstream. The more a person drinks the higher their BAC.
heroin
Cannabis: withdrawal and treatment
If a dependent person stops taking cannabis, they may experience withdrawal symptoms.
Cannabis use
Cannabis can affect your physical and mental health with heavy cannabis use potentially causing psychosis.
Cannabis/marijuana: what are the effects?
The effect of cannabis on a person depends on many factors including their size, weight and health and the amount taken.
Cannabis: tolerance and dependence
After prolonged use, cannabis is addictive and people using cannabis regularly develop dependence and tolerance to it.
Cannabis: what is it?
Cannabis is a drug derived from Indian hemp plants such as cannabis sativa. Its main active chemical is THC.
Video: Opioid overdose
Opioids are morphine-like drugs used to treat pain, and include medicines such as codeine, fentanyl and oxycodone. They aren't effective for treating chronic pain and are potentially dangerous.
Hangover symptoms: what happens to your body when you have a hangover
Discover the most common and lesser known hangover symptoms, how it affects your body and how to improve your symptoms.
Cocaine: what are the effects?
Read about the various effects of taking cocaine from the immediate effects of the rush to the crash that can follow afterwards and the long-term effects of cocaine use.
Quitting smoking
Many people are quitting smoking and feeling the benefits. Most people who finally give up the habit have had more than one attempt.
