(comparisons to normal-weight people of same gender)
obese women more likely to be celibate
obese men less likely to have more than one partner
obese men more likely to have erectile dysfunction
obese woman had no impairment of sexual function
obese women under 30 less likely to use contraceptives or to go see medical practitioner for them
obese women have 4.3x more unintended pregnancies
Obesity Linked to Lower Number of Sexual Partners and Increased Unwanted Pregnancies
study author: Bajos, N, PhD
medscape reporter: Emma Hitt, PhD
June 17, 2010
new study in British Medical Journal, BMJ. 2010;340:c2573.
study based in France, survey in 2006
Nathalie Bajos, PhD, Institut National de la Santé et de la Recherche Médicale, in Kremlin Bicêtre, France
hypothesis: obese at greater risk of neg "sexual outcomes" dt soc stigma and lack of medical followup
men and women
5535 women and 4635 men randomly included
1010 women and 1488 men were overweight (body mass index [BMI], 25 to < 30 kg/m2)
411 women and 350 men were obese (BMI > 30 kg/m2).
obese women less likely to report having any sex partners in last year (relative to normal wt women)
(odds ratio [OR], 0.71; 95% confidence interval [CI], 0.51 - 0.97)
obese men less likely (than norm wt men) to report having more than 1 sexual partner in a year
(OR, 0.31; 95% CI, 0.17 - 0.57; P < .001)
obese men were also more than twice as likely as normal-weight men to report having erectile dysfunction
(OR, 2.58; 95% CI, 1.09 - 6.11; P < .05).
in women higher BMI not related to sexual dysfunction (incl desire, arousal, dyspareunia)
obese women younger than 30 years less likely to use oral contraceptives
(OR, 0.34; 95% CI, 0.15 - 0.78)
or to seek healthcare services to attain contraceptives (OR, 0.37; 95% CI, 0.18 - 0.76)
obese women have 4x more unintended pregnancy
(OR, 4.26; 95% CI, 2.21 - 8.23).
marked sex effect:
partners of obese men and women were more tb obese
association stronger for women than for men
prevention of unintended preg = "major reproductive health challenge" --researchers
contraceptive data of study focus purely on oral contraception and condoms
long-acting reversible contraceptives not considered
"Dr. Goldbeck-Wood states that long-acting reversible contraceptives are suitable for obese women"
recommendations from the UK's National Institute for Health and Clinical Excellence
lower risk for venous thromboembolism and problems with weight-related dosage
require fewer visits to physician
Dr G-W says we need more research to know why obese woman have less sex, not using pills, getting more preg
mention of difficulty for docs to broach the subject
survey supported by the French National Agency of Aids Research and more
editorial: obese and lesbian = not pregnant
Bajos, N et al., Obesity Linked to Lower Number of Sexual Partners and Increased Unwanted Pregnancies, BMJ. 2010;340:c2573.