In a population-based, retrospective study involving postmenopausal wo
men, we investigated the relation between fracture prevalence (risk) a
nd present as well as previous body height and weight. A questionnaire
was mailed to 46,353 postmenopausal women aged 50-80 years and there
were 29,802 (64.3%) responses. Questions were asked about body height
and weight and fractures after the age of 25 and at what year they had
occurred. The fractures were grouped according to whether they had oc
curred within 5 years or 10 years prior to responding to the questionn
aire. Main outcome was relative risk (RR) of having sustained a fractu
re of the hip, radius, or spine within 5 years or within 10 years prio
r to responding to the questionnaire, RRs for hip and spine fractures
were negatively associated with current body mass index, current weigh
t, and weight gain since the age of 25 years. Moreover, the RRs of the
se fractures were positively associated with current height, height at
the age of 25, and height loss since the age of 25 years, with the ex
ception of fracture of the spine and current height. RRs for radius fr
acture were negatively associated with current body mass index and hei
ght loss since the age of 25. Moreover, the RRs for radius fracture we
re positively associated with current weight and height, weight gain s
ince the age of 25, and weight and height at the age of 25, Height at
the age of 25 was a consistent risk factor for all fracture types, The
RR of the highest quartile (greatest height) vs, the lowest was 2.5 f
or having a hip fracture during the past 5 years and 2.3 during the pa
st 10 years, which corresponds to a RR of 1.4 for an increase in 1 SD
(5.4 cm) in height at age 25, The RR for spine fracture increased abou
t fivefold in women having sustained greater than or equal to 3 cm hei
ght reduction compared with those who had maintained height, We conclu
de that tall women have a greater relative risk of experiencing fragil
ity fractures, By using height, women at risk of a later fracture can
be selected already at the age of 25 years for later follow-up, Height
loss, being strongly associated with fragility fractures, indicates t
he presence of an already existing osteoporotic condition that should
receive evaluation and treatment.