Frequently asked questions

Common health questions
How can I work out my body mass index (BMI)?
To work out your BMI:
divide your weight in kilograms (kg) by your height in metres (m)
then divide the answer by your height again to get your BMI

For example:
If you weigh 70kg and you're 1.75m tall, divide 70 by 1.75.
The answer is 40.
Then divide 40 by 1.75.
The answer is 22.9. This is your BMI.

Underweight: Your BMI is less than 18.5.
Healthy weight: Your BMI is 18.5 to 24.9.
Overweight: Your BMI is 25 to 29.9.
What should my daily intake of calories be?
Within a healthy, balanced diet, a man needs around 10,500kJ (2,500Kcal) a day to maintain his weight. For a woman, that figure is around 8,400kJ (2,000Kcal) a day. These values can vary depending on age, metabolism and levels of physical activity, among other things.
Do I need vitamin supplements?
Most people can get all the vitamins and minerals they need by eating a healthy, balanced diet.
When am I most fertile during my cycle?
You're most fertile within a day or two either side of an egg being released from your ovaries (ovulation).
But you can get pregnant if you have sex at any point during the week before ovulation, as sperm can live inside a woman's body for up to seven days.

If you're hoping to get pregnant, you don't need to specifically plan sex around this time though. It can be difficult to work out exactly when you ovulate and trying to have sex to a schedule can cause unnecessary stress and anxiety – and may mean you actually end up having less sex.

For the best chance of getting pregnant, have sex every two or three days throughout your cycle.