I am 52 years old and over the last couple of years, I have noticed that I am simply not the man I used to be.

Chlamydia is one of the most common sexually transmitted infections and is caused by the bacterium Chlamydia trachomatis. It is transmitted predominantly through vaginal, anal or oral sexual contact and may infect the urethra, cervix, rectum and, less commonly, the throat.

In conjunction with World Sexual Health Month this September, I understand you are addressing topics related to Sexually Transmitted Infections (STIs).

I recently developed some painful blisters around my genital area.

Dear Dr G, In conjunction with World Sexual Health Day in September, rather than asking about sexual dysfunction, I would like to ask about safe sex and the risk of sexually transmitted infections.

Dear Dr G, In conjunction with International Youth Day earlier this month, I've been thinking a lot about the health education we provide to adolescent boys.

Puberty is perhaps nature's most dramatic renovation project. In just a few years, a child's body, brain and emotions undergo remarkable changes on the journey towards adulthood.

I often hear about the human papillomavirus (HPV) vaccine, particularly in relation to cervical cancer.

Dr G is occasionally put on the spot by sex-deprived spouses due to temporary devotion to breastfeeding.

Dear Dr G, I am currently 30 weeks pregnant with my first baby, and as my due date approaches, everyone seems to have an opinion on breastfeeding.

Couples often put Dr G on the spot for his fertility formula.

World Population Day has prompted me to think about the growing fertility crisis that seems to be affecting women around the world.