Drugs can change the way in which people engage in sexual behaviour , sometimes altering and impairing one ’ s judgment and understanding of their surroundings , blurring sexual boundaries and , in some cases , leading to memory loss . Many studies show that injection drug users and young people who have consumed alcohol during sex have inconsistent condom usage . Drug use can also further complicate issues of sexual assault . Drugs such as cocaine , crack , heroin , and ATS have also been associated with increased sexual health risks . Studies show that ATS , cocaine and crack use are linked with inconsistent safer sex practices .
A World Health Organisation study of injection drug use in cities such as Rome and Rio de Janeiro revealed that the percentage of IDU who never use condoms ranges from 50 % to 82 %. While abstinence may be the most effective way of reducing both drug-related and sex-related risks , for many young people abstinence is not a realistic option . As with drug use , harm reduction programs must recognise that young people engage in sexual activities and may use drugs while doing so .
The intersection between harm reduction , sexual health and drug use is important because it acknowledges the issues that young people face and provides realistic approaches to dealing with such issues . Harm reduction programmes are supportive and enable young people to make decisions that fit their needs and experiences . Harm reduction tools may be used to mitigate sexual risks and can play a significant role in HIV and STI prevention . Young people need access to information and comprehensive education about drug use and the effects of drugs on their perception and risk , allowing them to learn ways to keep themselves protected while engaging in sexual activities and drug use .