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Tidsskrift For Den Norske Laegeforening... Jan 2016Most women of fertile age want safe contraception. This is especially important for women with epilepsy, as some antiepileptic drugs may have harmful effects on the... (Review)
Review
Most women of fertile age want safe contraception. This is especially important for women with epilepsy, as some antiepileptic drugs may have harmful effects on the foetus. When hormonal contraception is combined with antiepileptic drugs, it is essential to be aware that certain antiepileptic drugs may reduce the efficacy of hormonal contraceptives and vice versa, which may result in a reduced effect for both drugs. Non-hormonal contraception, such as the copper coil and barrier methods may, however, be used safely in this patient group.
Topics: Anticonvulsants; Contraceptives, Oral, Hormonal; Drug Interactions; Epilepsy; Female; Humans; Pregnancy
PubMed: 26757657
DOI: 10.4045/tidsskr.14.1559 -
International Journal of Cancer Nov 2014There is an unexplained strong male predominance in the aetiology of oesophageal adenocarcinoma (OAC). The hypothesis that oestrogens are protective, deserves attention.... (Meta-Analysis)
Meta-Analysis Review
There is an unexplained strong male predominance in the aetiology of oesophageal adenocarcinoma (OAC). The hypothesis that oestrogens are protective, deserves attention. A potential protective influence of exogenous oestrogen exposure, that is, hormone replacement therapy (HRT) and oral contraceptives (OC) has been addressed only in studies of limited statistical power, and the individual studies have not provided conclusive results. We conducted a systematic literature search and meta-analysis on HRT and OC and the risk of OAC. We used the databases PubMed and the Web of Science. Odds ratios (ORs) and 95% confidence intervals (CIs) were estimated by the Mantel-Haenszel random-effect method. A total of five studies were included. Compared to never users, ever users of HRT had a statistically significantly decreased risk of OAC (pooled OR = 0.75; 95% CI: 0.58-0.98), and ever users of OC had a borderline significantly decreased risk of this cancer (pooled OR = 0.76; 95% CI: 0.57-1.00). In conclusion, HRT and OC use seems to be associated with a decreased risk of OAC. However, further research is warranted.
Topics: Adenocarcinoma; Contraceptives, Oral; Esophageal Neoplasms; Female; Hormone Replacement Therapy; Humans; Male; Prognosis; Risk Factors
PubMed: 24676860
DOI: 10.1002/ijc.28869 -
Drug Safety Nov 2016Family planning options, including hormonal contraceptives, are essential for improving reproductive health among the more than 17 million women living with HIV... (Review)
Review
Family planning options, including hormonal contraceptives, are essential for improving reproductive health among the more than 17 million women living with HIV worldwide. For these women, prevention of unintended pregnancy decreases maternal and child mortality, as well as reduces the risk of perinatal HIV transmission. Similarly, treatment of HIV with antiretroviral therapy (ART) is essential for reducing morbidity and mortality among HIV-positive individuals, as well as preventing HIV transmission between sexual partners or from mother to child. Importantly, despite the benefits of hormonal contraceptives, barriers to effective family planning methods exist for HIV-positive women. Specifically, drug-drug interactions can occur between some antiretroviral medications and some hormonal contraceptives, which may influence both contraceptive efficacy and tolerability. In addition, safety concerns have been raised about the impact of hormonal contraceptives on HIV disease progression, tolerability, and the risk of female-to-male HIV transmission. This review article summarizes the potential for drug-drug interactions, tolerability, and contraceptive effectiveness when hormonal contraceptives are combined with ART. In addition, the evidence surrounding the influence of hormonal contraceptives on HIV transmission and HIV disease progression in women living with HIV are summarized.
Topics: Anti-Retroviral Agents; Contraceptive Effectiveness; Contraceptives, Oral, Hormonal; Drug Interactions; Female; HIV Infections; Humans
PubMed: 27562873
DOI: 10.1007/s40264-016-0452-7 -
European Journal of Pharmaceutical... Nov 2023Oral contraceptives (OCs), insulin sensitizers, and antiandrogens (AAs), alone or in combination, are commonly used for treating non-fertility indications in polycystic... (Meta-Analysis)
Meta-Analysis
Oral contraceptives (OCs), insulin sensitizers, and antiandrogens (AAs), alone or in combination, are commonly used for treating non-fertility indications in polycystic ovary syndrome (PCOS). However, unclear risk-benefit profiles jeopardize their appropriate clinical applications. This study aimed to quantitatively evaluate the effects of the aforementioned medications and to compare their risk-benefit profiles. Randomized controlled trials published until 14th March 2022 were searched in PubMed and Embase. A model-based meta-analysis was developed to examine the time-effect profiles of each medication. The maximal percentage change of the effect (E) and time to achieve half of E (T) were estimated. Primary outcomes included menstruation, hirsutism score, free androgen index (FAI), body mass index (BMI), insulin sensitivity, and lipid profiles. Overall, 200 studies (9,685 patients and 385 arms) were identified for modeling. OCs performed exceptionally well in improving menstruation (E: 149%; T: 7.44 weeks), hirsutism score (E: 66.2%; T: 26.2 weeks), and FAI (E: 75.7%; T: 0.51 weeks). However, OCs elevated the triglyceride (TG) level (E: 12.6%; T:1.19 weeks). After 12-week OC treatment, the TG level of approximately 30% of patients, whose baselines were normal, exceeded the reference limit. This suggested that OC-induced dyslipidemia should be routinely monitored. The maximal BMI-lowering effect of metformin was similar to that of placebo (E: 3.80%); however, metformin had a shorter T (6.67 weeks versus 12.9 weeks). Further, active lifestyle intervention plus placebo significantly decreased BMI (E: 8.78%). Adding metformin to active lifestyle intervention accelerated the BMI-lowering effect within 24 weeks, whereas with the extension of this addition beyond 24 weeks, BMI did not reduce further, which indicated that benefits were limited from this prolonged addition. AAs were less potent in reducing hirsutism score (E: 40.2% versus 66.2%) and FAI (E: 34.5% versus 75.7%) compared to OCs. OC plus metformin combined OC-derived androgen-suppressing effects and metformin-derived insulin-sensitizing effects, and partially relieved the OC-induced TG increase (E: 9.76%). Baseline dependency was found in most clinical responses, implying that pharmacotherapies tailored based on baselines achieved more clinical improvements. This study presents new quantitative evidence on pharmacotherapies for PCOS. Currently, long-term risk-benefit profiles and emerging therapies are inadequately reported and require more further research.
Topics: Humans; Female; Polycystic Ovary Syndrome; Contraceptives, Oral; Androgen Antagonists; Insulin; Hirsutism; Androgens; Metformin; Hypoglycemic Agents
PubMed: 37666459
DOI: 10.1016/j.ejps.2023.106577 -
The Cochrane Database of Systematic... Sep 2014Repeated use of postcoital hormonal contraception is not currently recommended due to the higher risk of side effects and lower contraceptive effectiveness compared to... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
Repeated use of postcoital hormonal contraception is not currently recommended due to the higher risk of side effects and lower contraceptive effectiveness compared to other modern methods of contraception. However, emerging evidence indicates renewed interest in a regular coitally-dependent method of oral contraception. We evaluated the existing data on safety and effectiveness of pericoital use of levonorgestrel and other hormonal drugs to prevent pregnancy.
OBJECTIVES
To determine the effectiveness and safety of repeated use of pre- and postcoital hormonal contraception for pregnancy prevention.
SEARCH METHODS
We searched until 1 September 2014 for trials that tested repeated pre- and postcoital use of hormonal drugs for pregnancy prevention. Databases included CENTRAL, MEDLINE, and POPLINE. We searched for current trials via ClinicalTrials.gov and ICTRP. For the initial review, we also searched EMBASE, CINAHL, and LILACS, and wrote to researchers to identify other trials.
SELECTION CRITERIA
We considered published and unpublished studies of repeated postcoital or immediately precoital use of hormonal drugs for contraception with pregnancy as an outcome.
DATA COLLECTION AND ANALYSIS
Two authors independently confirmed eligibility and extracted data from the included studies. We calculated confidence intervals (CI) around individual study Pearl indices using a Poisson distribution. We presented individual study estimates and pooled estimates and their 95% CI, where appropriate.
MAIN RESULTS
We found 22 trials that evaluated pericoital use of LNG and other hormonal drugs on a regular basis to prevent pregnancy. The studies included a total of 12,400 participants, and were conducted in Europe, Asia, and the Americas. The drugs and doses evaluated included levonorgestrel (LNG) 0.75 mg (11 studies), LNG in doses other than 0.75 mg (4 trials), and hormones other than LNG (7 trials). Outcomes included pregnancy rates, discontinuation, side effects, and acceptability.Pericoital levonorgestrel was reasonably efficacious and safe. The pooled Pearl Index for the 0.75 mg dose of LNG was 5.4 per 100 woman-years (95% CI 4.1 to 7.0). The pooled Pearl Index for all doses of LNG was 5.0 per 100 woman-years (95% CI 4.4 to 5.6). Other hormonal drugs appeared promising but most of them were not studied extensively. Menstrual irregularities were the most common side effects reported. However, the studies provided no consistent evidence of a relationship between bleeding abnormalities and either frequency of pill intake or total dose of the drug. Non-menstrual side effects were reportedly mild and not tabulated in most studies. Most women liked the pericoital method in spite of frequent menstrual irregularities.
AUTHORS' CONCLUSIONS
The studies of pericoital LNG regimens provided promising results but many had serious methodological issues. Most reports were decades old and provided limited information. However, we considered the evidence to be moderate quality because of the large number of participants from diverse populations, the low pregnancy rates, and the consistent results across studies. Rigorous research is still needed to confirm the efficacy and safety of pericoital use of LNG as a primary means of contraception among women with infrequent intercourse. If the method is shown to be efficacious, safe and acceptable, the results may warrant revision of the current World Health Organization recommendations and marketing strategies.
Topics: Coitus; Contraceptives, Oral, Hormonal; Contraceptives, Postcoital; Female; Humans; Levonorgestrel; Menstruation Disturbances; Randomized Controlled Trials as Topic
PubMed: 25259677
DOI: 10.1002/14651858.CD007595.pub3 -
Cephalalgia : An International Journal... Jan 2024Migraine is a common disorder, particularly affecting women during their reproductive years. This female preponderance has been linked to exposure to female sex hormones.
BACKGROUND
Migraine is a common disorder, particularly affecting women during their reproductive years. This female preponderance has been linked to exposure to female sex hormones.
METHODS
We used self-reported data from women born in 1943-1965 enrolled in the Norwegian Women and Cancer Study to examine the differences between women with migraine and women without migraine in a prospective design with respect to both endogenous and exogenous female sex hormone exposure.
RESULTS
In total, 62,959 women were included in the study, of whom 24.8% reported previous migraine (n = 15,635). Using a Cox proportional hazards model, we found that higher age at menarche reduced the risk of migraine (hazards ratio (HR) = 0.96, 95% confidence interval (CI) = 0.95-0.98) and that oral contraceptive use and parity increased the risk of migraine (HR = 1.12, 95% CI = 1.06-1.18 and HR = 1.37, 95% CI = 1.29-1.46, respectively).
CONCLUSIONS
Older age at menarche appears to reduce migraine risk, whereas oral contraceptive use and having children appear to increase the risk. Further research is required to investigate the causality of these associations.
Topics: Pregnancy; Child; Female; Humans; Aged, 80 and over; Menopause; Estrogens; Migraine Disorders; Risk Factors; Contraceptives, Oral
PubMed: 38215242
DOI: 10.1177/03331024231225972 -
The effect of hormonal contraceptive therapy on clinical laboratory parameters: a literature review.Clinical Chemistry and Laboratory... Jan 2024Hormonal contraceptives (HC) are widely used among women in reproductive ages. In this review, the effects of HCs on 91 routine chemistry tests, metabolic tests, and... (Review)
Review
Hormonal contraceptives (HC) are widely used among women in reproductive ages. In this review, the effects of HCs on 91 routine chemistry tests, metabolic tests, and tests for liver function, hemostatic system, renal function, hormones, vitamins and minerals were evaluated. Test parameters were differently affected by the dosage, duration, composition of HCs and route of administration. Most studies concerned the effects of combined oral contraceptives (COC) on the metabolic, hemostatic and (sex) steroids test results. Although the majority of the effects were minor, a major increase was seen in angiotensinogen levels (90-375 %) and the concentrations of the binding proteins (SHBG [∼200 %], CBG [∼100 %], TBG [∼90 %], VDBP [∼30 %], and IGFBPs [∼40 %]). Also, there were significant changes in levels of their bound molecules (testosterone, T3, T4, cortisol, vitamin D, IGF1 and GH). Data about the effects of all kinds of HCs on all test results are limited and sometimes inconclusive due to the large variety in HC, administration routes and dosages. Still, it can be concluded that HC use in women mainly stimulates the liver production of binding proteins. All biochemical test results of women using HC should be assessed carefully and unexpected test results should be further evaluated for both methodological and pre-analytical reasons. As HCs change over time, future studies are needed to learn more about the effects of other types, routes and combinations of HCs on clinical chemistry tests.
Topics: Female; Humans; Laboratories, Clinical; Sex Hormone-Binding Globulin; Contraceptives, Oral, Combined; Gonadal Steroid Hormones; Testosterone; Carrier Proteins; Hemostatics
PubMed: 37419659
DOI: 10.1515/cclm-2023-0384 -
Contraception Sep 2016Superficial venous disease, which includes superficial venous thrombosis (SVT) and varicose veins, may be associated with a higher risk of venous thromboembolism (VTE).... (Review)
Review
BACKGROUND
Superficial venous disease, which includes superficial venous thrombosis (SVT) and varicose veins, may be associated with a higher risk of venous thromboembolism (VTE). Use of combined hormonal contraceptives (CHCs) has been associated with an increased risk of VTE compared with nonuse. Little is known about whether use of CHCs by women with superficial venous disease may further elevate the risk of VTE.
OBJECTIVES
To investigate evidence regarding risk of VTE in women with SVT or varicose veins who use CHCs compared with non-CHC users.
METHODS
We searched the PubMed database for all English-language articles published from database inception through September 2014. We included primary research studies that examined women with SVT or varicose veins who used CHCs compared to women with these conditions who did not use CHCs. Outcomes of interest included VTE (among women with SVT or varicose veins) and SVT (for those with varicose veins).
RESULTS
Two studies were identified that met inclusion criteria. One fair-quality case-control study reported an odds ratio (OR) for VTE of 43.0 (95% confidence interval [CI] 15.5-119.3) among women with SVT using oral contraceptives (OCs) compared with nonusers without SVT. The OR for VTE was also increased for women with SVT not using OCs (OR 5.1; 95% CI 2.8-9.5) and for women without SVT using OCs (OR 4.0; 95% CI 3.3-4.7), compared with nonusers without SVT. One fair-quality cohort study demonstrated that women with varicose veins had an increased rate of VTE with use of OCs (1.85 per 1000 women-years [WY]), compared with users without varicose veins (0.84 per 1000 WY), nonusers with varicose veins (0.31 per 1000 WY) and nonusers without varicose veins (0.19 per 1000 WY). This study also demonstrated that women with varicose veins had an increased rate of SVT with use of OCs (10.63 per 1000 WY), compared with nonusers with varicose veins (7.59 per 1000 WY), users without varicose veins (1.89 per 1000 WY) and nonusers without varicose veins (0.77 per 1000 WY).
CONCLUSION
Two studies suggest increased risk of VTE among OC users with superficial venous disease; however, no definitive conclusions can be made due to the limited number of studies and limitations in study quality. Theoretical concerns need to be clarified with further research on whether the risk of significant sequelae from superficial venous disease among CHC users is related to clinical severity of disease and underlying factors.
Topics: Contraceptives, Oral, Combined; Female; Humans; Risk Factors; Venous Thromboembolism; Venous Thrombosis
PubMed: 25835269
DOI: 10.1016/j.contraception.2015.03.010 -
Revista Da Associacao Medica Brasileira... Mar 2018
Topics: Breast Neoplasms; Contraception; Contraceptives, Oral, Combined; Contraceptives, Oral, Hormonal; Female; Humans; Risk Assessment; Risk Factors
PubMed: 29641773
DOI: 10.1590/1806-9282.64.03.201 -
Contraception Sep 2016Contraception is important for women who are postpartum, including those who are breastfeeding. Use of combined hormonal contraceptives (CHCs) may affect breastfeeding... (Review)
Review
BACKGROUND
Contraception is important for women who are postpartum, including those who are breastfeeding. Use of combined hormonal contraceptives (CHCs) may affect breastfeeding performance and infant health outcomes.
OBJECTIVE
The objective was to identify evidence examining clinical outcomes for breastfeeding and infant health among breastfeeding women using CHCs compared to nonusers.
SEARCH STRATEGY
We searched the PubMed database for all articles published from database inception through September 30, 2014.
SELECTION CRITERIA
We included primary research studies that compared breastfeeding women using CHCs with breastfeeding women using nonhormonal or no contraception, or compared breastfeeding women initiating combined hormonal contraception at early versus later times postpartum. Breastfeeding outcomes of interest included duration, rate of exclusive breastfeeding and timing of supplementation. Infant outcomes of interest included growth, health and development.
RESULTS
Fifteen articles describing 13 studies met inclusion criteria for this review. Studies ranged from poor to fair methodological quality and demonstrated inconsistent effects of combined oral contraceptives (COCs) on breastfeeding performance with COC initiation before or after 6 weeks postpartum; some studies demonstrated greater supplementation and decreased breastfeeding continuation among COC users compared with nonusers, and others demonstrated no effect. For infant outcomes, some studies found decreases in infant weight gain for COC users compared with nonusers when COCs were initiated at <6 weeks postpartum, while other studies found no effect. None of the studies found an effect on infant weight gain when COCs were started after 6 weeks postpartum, and no studies found an effect on other infant health outcomes regardless of time of COC initiation.
CONCLUSION
Limited evidence of poor to fair quality demonstrates an inconsistent impact of COCs on breastfeeding duration and success. The evidence also demonstrated conflicting results on whether early initiation of COCs affects infant outcomes but generally found no negative impact on infant outcomes with later initiation of COCs. The body of evidence is limited by older studies using different formulations and doses of estrogen and poor methodologic quality. Given the significant limitations of this body of evidence, the importance of contraception for postpartum women and the theoretical concerns that have been raised about the use of combined hormonal contraception by women who are breastfeeding, rigorous studies examining these issues are needed. In addition, postpartum women should be counseled about the full range of safe alternative contraceptive methods, particularly during the first 6 weeks postpartum when the risk of venous thromboembolism is highest and use of estrogen may exacerbate this risk.
Topics: Child Development; Contraception; Contraception Behavior; Contraceptives, Oral, Combined; Contraceptives, Oral, Hormonal; Female; Humans; Infant; Lactation; Progestins; Randomized Controlled Trials as Topic; Weight Gain
PubMed: 26002804
DOI: 10.1016/j.contraception.2015.05.006