Application- Health psychology considers the reasons for behaviour that is detrimental to health, such as substance abuse, to promote healthy living. For example; it looks at biological causes of substance abuse and how drug treatments work

Tolerance- As a drug is increasingly used of a period of time, more of it will be needed to produce the same effect as the first time- causing addiction

Substance Misuse- when a drug (mind altering substance) is used in a way that the individual's physical and mental health are affected. When it interferes with a person's social situation and responsibilities

Psychological dependence- When a drug takes great importance in someone's life. So much so the cravings are hard to resist. Heroin produces pleasure and dulling of senses so can be attractive to people in difficult situations

Physical Dependence- The body becomes used to functioning with the drug in the system and 'needs' it for normal functioning, this is addiction. E.g Heroin users tend to produce less endorphins, so they rely on heroin to produce pleasure + reduce pain

Withdrawal- (Heroin) Generally starts around 6 hours after using Heroin and usually involves agitation and restlessness. This is when your body reacts to no longer having the drug in your system; for example sweating, diarrhoea, itchy body

	Created by Rebecca Johnstone over 10 years ago

A-Level Psychology Slide Set on Health Psychology, created by Rebecca Johnstone on 01/06/2016.