“…For breast cancer, calcium has been proposed to reduce fat-induced cell proliferation by maintaining intracellular calcium concentrations (Jacobson et al, 1989;Carroll et al, 1991;Newmark, 1994;Lipkin and Newmark, 1999;Xue et al, 1999). Vitamin D modulates calcium metabolism, inhibits cellular proliferation, induces differentiation and apoptosis and (Ziegler et al, 1991) inhibits angiogenesis in normal and malignant breast cells Xue et al, 1999;Shin et al, 2002;Cui and Rohan, 2006;Deeb et al, 2007). With regard to cervical cancer, however, only a few epidemiological studies have sought to determine the association between calcium and vitamin D and cancer risk (Ziegler et al, 1990(Ziegler et al, , 1991Liu et al, 1993).…”