This is to ensure that we are able to respond to your query or comment without any problems or delays. Everyone mistypes their email address occasionally, so this is an easy way to check that it's right before sending.
This is entirely optional and is not required by us to reply to your query. However, if you wish to be contacted by telephone, we will need this.
This is entirely optional and is not required by us to reply to your query. However, supplying this information will allow us to calculate your BMI and for us to better understand your individual case. To calculate your BMI for yourself, why not try the BMI Calculator on our 'About Obesity' page?