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According to scientists broccoli contains a chemical called sulphoraphane, which activates cancer-fighting enzymes inside cells. some researcher's say that the richest source of sulphoraphane is contained in sprouts. The investigators experimented on six volunteers they first smeared broccoli sprout extract on the skin of six volunteers for three days, and then exposed them to high doses of ultraviolet radiation. They found there was an average 37 percent less redness and sunburn in the patches covered by broccoli extract. Meanwhile, researchers are making a sun cream from broccoli sprouts.

Breastfeeding is a way to reduce the risk of breast cancer even if women first become mothers at a relatively old age. Studies have shown that the later in life a woman has her first child and the fewer children she has, the higher the risk of breast cancer. But the meta-analysis conducted at the Universities of Oslo and Southern California looked at the influence of breastfeeding in 10 studies published between 1995 and 2006, and was recently published in Breast Cancer Research. Two-thirds of breast-cancer victims have cells with estrogen or progesterone receptors; these are like antennae, as female hormones send signals through them that tell breast cancer cells to grow. After a breast tumor is removed, the cancer cells are tested to see if they have hormone receptors. The more such receptors are present, the more likely that hormonal therapy will work. Every baby born to a woman reduces the risk of contracting hormone-receptor-positive (HR+) breast cancer by 11 percent, while women who have their first baby late have an increased risk of 27%. The number of deliveries or the age of a woman at her first delivery wasn't connected to a risk of HR-negative cancer, according to ICA director-general Miri Ziv, who spoke at the workshop. But getting one's first menstrual period relatively late and breastfeeding reduced the risk of both HR+ and HR- breast cancer. Pregnancy, suggested the researchers, has a protective effect against breast cancer because it reduces a woman's exposure to estrogen, which is also reduced during breastfeeding. Thus breastfeeding reduces and even negates the breast cancer risk among women who had their first baby after 25, and had their first menstrual period early.