Hi Janie, thanks for your support (not a pun)
I wonder how many women are aware of this!
To test his theory, Singer compared women in Fiji, half of whom wear bras, half of whom go without. Singer found the bra-wearers get breast cancer at the same rate US women do. But, the Fijian women who don't wear bras have almost no incidence of breast cancer. Both groups share the same living environment and diet.

Their study (not medically supported) of over 4,700 women gave the following results:

Women who wore their bras 24 hours per day had a 3 out of 4 chance of developing
       breast cancer (in their study, n=2056 for the cancer group and n=2674 for
       the standard group).

Women who wore bras more than 12 hour per day but not to bed had a 1 out of 7 risk.

Women who wore their bras less than 12 hours per day had a 1 out of 152 risk.

Women who wore bras rarely or never, had a 1 out of 168 chance of getting breast
       cancer. The overall difference between 24 hour wearing and not at all was a
       125-fold difference.

The Medical profession of course claimed it was a faulted study (not approved
by them) but when you have risks falling from 3 in 4 to 1 in 133 you must be
rather stupid to say there is no "bra" effect!

Ed: It looks to me like they need to have less Cancer Fund Raisers (raise money
to give to Cancer Doctors) and get down to some basics! If nothing else, bra
wearers should wear a bra less than 12 hours daily and massage the lymph glands
under each arm, next to their breasts, at least a few times a week. They may
greatly reduce thier risks of breast cancer and at the same time may enjoy better
general health, as the lymph glands are cleared!

Visit Naturale Soulution for properly designed bras!

All jokes aside about me and breasts, google "breast bra cancer"
and read the results, 1000s of death a year could be prevented by not wearing a bra, or at least just taking it off when you are at home, or making a point not to wear one at the weekend.
I am only at a slight risk as I tend to only wear a bra for a couple of hours on a friday night in the pub.
Skipy