Impotence affects at least 1 in 5 men at some point in their life. This common male sexual disorder can develop by way of physical and psychological issues, and lifestyle factors.

Obesity claims the lives of over 30,000 people in England each year. People who are obese are also at significant risk of stroke, heart disease, type 2 diabetes and high blood pressure.

Cigarettes contain thousands of toxic chemicals. Frequently inhaling nicotine smoke invites the risk of serious, sometimes fatal illnesses and diseases, including many types of cancer.

Up to 10% of men are said to have experienced premature ejaculation, the inability control ejaculation during sex. Common triggers include stress, anxiety and sexual inexperience.

Male pattern baldness can develop in men as young as 19 or 20. It is a hereditary condition that may be spurred on by the stress and worry of a busy, hectic lifestyle.

Oral contraceptive pills offer the most convenient and reliable method of ensuring against pregnancy during sex. When used correctly, the pill is almost 100% effective.

Emergency contraceptive pills can be used for up to 5 days after sex to prevent an unwanted pregnancy. A pill should be taken only in case of an emergency, usually after contraceptive failure.

Clinical data suggests that up to 80% of people with the herpes virus may not realise they have been infected. Herpes is a common STI that is passed on easily during sexual activity.

Female sexual dysfunction encompasses a number of commonly occurring sexual health problems, such as low libido, vaginal dryness and difficulty in reaching climax.

The influenza virus constantly evolves, putting children, adults above 60, and people with a weakened immune system most at risk of developing complications such as pneumonia.