It is very low in calories. 100 g of the fresh cauliflower head provides just 26 calories. Nevertheless, it comprises of several health-benefiting antioxidants and vitamins in addition to be low in fat and cholesterol.
Its florets contain about 2 g of dietary fiber per 100 g; providing about 5% of recommended value.
Cauliflower contains several anti-cancer phyto-chemicals like sulforaphane and plant sterols such as indole-3-carbinol, which appears to function as an anti-estrogen agent. Together, these compounds have proven benefits against prostate, breast, cervical, colon, ovarian cancers by virtue of their cancer-cell growth inhibition, cytotoxic effects on cancer cells.
Furthermore, Di-indolyl-methane (DIM), a lipid soluble compound present abundantly in Brassica group of vegetables, including cauliflower, has found to be effective as immune modulator, anti-bacterial and anti-viral agent. This compound brings out these functions by virtue of its ability to synthesize and potentiate Interferon-Gamma receptors at the cellular level. DIM has currently been found application in the treatment of recurring respiratory papillomatosis caused by the Human Papilloma Virus (HPV) and is in Phase III clinical trials for cervical dysplasia.