What is osteoporosis? -- BMUS: the microcrack fixers -- Menopause and bone loss -- The amazing bone-anabolic PTHs -- How might PTHs stimulate bone growth? -- The clinical prospects of the invincible PTHs -- OGP: the osteogenic growth peptide -- The statins -- Surface signaling steroids-real anabolics or pseudo-anabolics? -- Strontium, calcium's big brother.