The present invention has for its object to provide a method which comprises using edible and safe
food components as active ingredients and promotes the OPG production promoting effect,
RANKL expression inhibiting effect and
osteoclast differentiation inhibiting effect, which take part in the prevention of
bone resorption, and a composition like that. The present invention provides a method for promoting the
bone resorption inhibitory effect such as the OPG production promoting effect,
RANKL expression inhibiting effect and
osteoclast differentiation inhibiting effect by using a composition containing extracts from plants belonging to the
genus Platycodon, plants belonging to the
genus Origanum, plants belonging to the
genus Thymus, plants belonging to the genus
Zanthoxylum, plants belonging to the genus
Arctium, plants belonging to the genus Camellia, plants belonging to the genus
Persea, plants belonging to the genus Stevia, plants belonging to the genus
Pimpinella, plants belonging to the genus
Matricaria, plants belonging to the genus
Malva, plants belonging to the genus Ilex, and / or plants belonging to the genus Ptychopetalum, and a composition like that.