Novel methods for the medical treatment and/or inhibition of the development of breast cancer, hypercholesterolemia, hyperlipidemia or atherosclerosis in susceptible warm-blooded animals including humans involving administration of selective estrogen receptor modulator and an amount of a sex steroid precursor selected from the group consisting of dehydroepiandrosterone, dehydroepiandrosterone sulfate, androst-5-ene-3β,17β-diol, and compounds converted in vivo to one of the foregoing precursors.
Further administration of bisphosphonates in combination with selective estrogen receptor modulators and/or sex steroid precursors is disclosed. Pharmaceutical compositions for delivery of active ingredients and kits useful to the invention are disclosed.