Breast cancer is now the most common cancer in British women under 35 years old, with 44,000 new cases diagnosed every year
We know that oestrogen, the female s.e.x hormone, is linked to the disease and many women are exposed to it through the contraceptive pill and hormone replacement therapy.
Doctors are still concerned that rates of breast cancer are rising and say they can no longer blame it on an ageing population and better rates of detection.
We look at suspected causes for this rise and how you can lessen the risk…
? Are our lifestyles to blame
Although the biggest risk factor is age – 80 per cent of breast cancer cases are diagnosed in women over 50 – lifestyle choices in younger women are attracting more attention.
Many women are opting for later pregnancies and smaller families and breast cancer is thought to be caused by the absence of hormonal changes associated with childbirth.
Liz Carroll, assistant director of services at Breast Cancer Care, explains: 'There is a correlation between cases of breast cancer and women who choose to have children later in life,' she explains.
'These are only statistics and we don't know why there is a link but if you have your children before the age of 30 and if you breastfeed, you have less chance of developing the disease.'
There are also tenuous links to stress but doctors have difficulty finding concrete evidence to support the theories.
However, regular boozing will increase your chance of developing the disease.
Uh-oh, I do enjoy a tipple. How much is too much? Unfortunately, just a few units over the daily guidelines can increase your chances of developing the disease.
Women who drink one large glass of wine a day, which means 21 units of alcohol per week compared with the recommended 15, increase their risk by a fifth.
It's unclear how drinking alcohol promotes breast cancer but it may raise levels of oestrogen in the body.
? What about fat people? Aren't they at risk
Although studies do say breast cancer is linked to obesity and a lack of exercise, Carroll says it only matters if you are overweight and more than 50 years old.
'But we do still worry these women will never attempt to lose weight and will still be larger during their menopause.'
? What about the risks you can't control
Genes are a pain in the you-know-what – you're stuck with what you get.
Of the 44,000 new cases every year, five per cent are genetic.
There has to be a strong family history says Carroll: 'It has to affect many female relatives on the same side of the family, so your mum, your auntie and your sister.'
What about toxins? I've heard using deodorant and drinking cow's milk puts you at a higher risk
There have been concerns that pollutants in the environment affect our hormone levels and we digest pesticides through the consumption of farm animals.
However, the evidence is all anecdotal, says Dr Julie Sharp, Cancer Research UK's science information manager.
'There is little evidence that environmental factors play a major role in breast cancer risk.
'It's unlikely changes in farming practices are a significant factor. Younger women simply need to limit the amount of alcohol they drink.'
... If only doctors could invent a magic pill to stop us getting breast cancer
A-ha, some good news at last. Because pregnancy in early life has shown to be protective, doctors are looking at what hormones are released during this time.
One hormone that increases massively during pregnancy is prolactin, which produces changes that cause lactation.
Doctors are currently working on a vaccine that will mimic these hormonal changes.
For more information, telephone 0808 800 6000 or visit
کد:
www.breastcancercare.co.uk
Boys get it too
There are 300 cases of male breast cancer every year. Nicky Avery, 26, a labourer from Southend, was diagnosed two years ago:
'I first noticed the lump beneath my left nipple in 2003. I ignored it but two years ago it became itchy, so I saw a doctor who did a biopsy. 'Two weeks later they told me I had breast cancer. They were baffled and told me I was unlucky.
'I thought that was an odd choice of words – unlucky is losing a tenner in the pub. I now have a ten-inch scar where the lump was and have had six months of chemo and three months of radiotherapy.
'So far, the cancer has gone and although I don't go out as much, I've had lots of support from my friends.
'They were pretty shocked at first but now call me Nipper-less Nicholas. At least we're all laughing