Scotland's young people are still far more likely to contract a sexually transmitted infection.
A report published on Tuesday outlining the country's sexual health reveals under-25s continue to account for the vast majority of diagnoses.
Figures for last year reveal that 13% of the population was in that age group in 2008. However, 72% of chlamydia sufferers, 59% of genital wart sufferers and 61% of gonorrhoea cases were in under-25s.
Shirley Fraser from NHS Health Scotland said: "Whilst we are seeing a rise in STIs, especially in young people under 19, much of this is due to our continued efforts to improve access to services as promoted by our sexual health strategy, Respect and Responsibility.
"However, we cannot be complacent and we will continue to promote positive sexual wellbeing, including consistent and accurate use of condoms and longer lasting contraception."
Experts say the figures prove more regular testing is required to ensure prompt treatment and reduce the risk of complication.
However, while figures show young people are more likely to experience STIs, unintended pregnancy and abortion, experts say they are also concerns about rates of unprotected sex amongst gay men.
Consultant Physician, Dr Andy Winter, said: "While there is no room for complacency, we have seen a significant fall in gonorrhoea numbers and stabilization of syphilis and HIV reports in men who have sex with men.
"People attending GUM clinics across Scotland are now much more likely to be offered and accept an HIV test, which is now seen as a routine part of a sexual health screen. But there are still too many people turning up very unwell with undiagnosed HIV infection, even though highly effective treatment is available to prevent them becoming ill."
Find out more about STIs and how to protect yourself
