A review of over 21,000 male physicians in the Physicians' Health Study does not support the claim that fish oil is beneficial. Four years of follow-up revealed no reduction in the rate of cardiovascular death, stroke or heart attack in those who consumed fish or fish oils on a regular basis. A group of women suffering with breast cancer had increased levels of NK-cells after moderate exercise training.
Exercise is known to improve depression and lower stress levels.
Some now fear that the male condom may make women infertile. Talc, used on condom surfaces as a lubricant, may cause fibrosis on the woman's fallopian tubes, rendering her infertile. Talc is known to cause ovarian cancer. It is known that tumor manipulation during surgery or diagnostic procedures may cause the release of tumor cells which are carried to other parts of the body. It is possible that the mechanical massage associated with the application of therapeutic ultrasound may break open tumors, allowing their spread.