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Menstrual characteristics associated with endometriosis

Arumugam K, Lim JM

Br J Obstet Gynaecol, 1997 Aug;104(8):948-50.
PMID: 9255089

This case-controlled study investigates whether the presence of menstrual characteristics, which may increase the exposure of the peritoneal cavity to retrograde menstruation, increases the risk of developing endometriosis. The menstrual characteristics considered were 1. age at menarche of less than 12 years, 2. duration of menstrual flow greater than five days and 3. menstrual cycle lengths of < 28 days. The frequency with which these menstrual characteristics occurred in 305 women with proven endometriosis was compared with their frequency in 305 age-matched women without endometriosis. Adjusting for the confounding factors of parity, age at first childbirth and social class, the only menstrual characteristic that was significantly associated with endometriosis was menstrual cycle lengths of less than 28 days (odds ratio 1.83; 95% confidence intervals 1.60-2.55). There was insufficient evidence to conclude that the presence of menstrual characteristics which may increase the exposure of the peritoneal cavity to retrograde menstruation, increase a women's risk of developing endometriosis. The association of short menstrual cycle lengths with endometriosis may have been consequential rather than causal.

Matched MeSH terms: Menstruation/physiology
Reproductive factors influencing bone mineral density in postmenopausal women

Mohammadi F, Amirzadeh Iranagh J, Motalebi SA, Hamid TA

Women Health, 2019 02;59(2):145-154.
PMID: 29400628 DOI: 10.1080/03630242.2018.1434592

This study examined the relationship between reproductive characteristics and bone mineral density (BMD) in postmenopausal women who had been referred to the menopause clinics of the National Population and Family Development Board and of the Hospital Kuala Lumpur from July 2011 to January 2012. The participants of this study were 201 postmenopausal Malaysian women aged 45-71 years. Some socio-demographic, lifestyle, and reproductive factors were recorded. Calcaneal BMD was measured by quantitative ultra-sonography. Correlations of reproductive factors with BMD were assessed by Pearson's correlation test and multiple regression analysis. Age at menopause was not significantly correlated with BMD, while the years after menopause, age at the first menstrual period, number of pregnancies, and total lactation periods were inversely correlated with it. Among reproductive factors, only the association between lactation duration and BMD remained significant after adjusting for age, body mass index, activity, and calcium intake. The results indicated that except for prolonged total time of lactation, other reproductive factors were not significantly associated with BMD in postmenopausal women.

Matched MeSH terms: Menstruation/physiology
Fulltext Salivary cariogenic bacteria counts are associated with obesity in student women at a Malaysian university

Yeo WZ, Lim SP, Say YH

Asia Pac J Clin Nutr, 2017 12 10;27(1):99-106.
PMID: 29222886 DOI: 10.6133/apjcn.032017.14

BACKGROUND AND OBJECTIVES: The counts of cariogenic bacteria lactobacilli and mutans streptococci have been studied and correlated with sugar intake. This study was to investigate the association between salivary lactobacilli and mutans streptococci counts with sweet food eating behavior and sweet sensitivity among 120 Malaysian women (101 ethnic Chinese, 19 ethnic Indians), while taking into account anthropometric and menstruation variables.
METHODS AND STUDY DESIGN: Demographics, anthropometric measurements and menstrual history were taken. Hedonic preference, intake frequency of a list of sweet foods, intensity perception and pleasantness ratings of sweet stimuli were assessed. Saliva was collected for lactobacilli and mutans streptococci culture.
RESULTS: We found that centrally obese subjects (high waist circumference and waist-hip ratio) had significantly higher salivary lactobacilli and mutans streptococci counts (all p<0.05), while overweight and high total body fat subjects had significantly higher salivary mutans streptococci counts (p<0.001). The sweetness intensity perception of chocolate malt drinks was significantly lower in women who were in their pre-menstrual (post-ovulation) phase. However, menstruation variables (menstrual phases, regularity and pre-menstrual syndromes) did not play a role in determining compulsive eating, sweets/chocolate craving and salivary lactobacilli and mutans streptococci counts.
CONCLUSIONS: Taken together, salivary lactobacilli and mutans streptococci counts of the Malaysian women are associated with central obesity, but not sweet food eating behaviour, sweet sensitivity and menstruation variables. Salivary microbiome analysis could be useful as a potential diagnostic indicator of diseases such as obesity.

Matched MeSH terms: Menstruation/physiology

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