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Breastfeeding may lower mums’ later life depression/anxiety risks for up to 10 years after pregnancy

Women experiencing depression and anxiety 10 years after pregnancy were less likely to have breastfed and had shorter periods of any or exclusive breastfeeding over their lifetime.

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Breastfeeding may lower mothers’ later life risks of depression and anxiety for up to 10 years after pregnancy, suggest the findings of a small observational study, published in the open access journal BMJ Open.

The observed associations were apparent for any, exclusive, and cumulative (at least 12  months) breastfeeding, the study shows.

Breastfeeding is associated with lower risks of postnatal depression and anxiety, but it’s not clear if these lowered risks might persist in the longer term, say the researchers.

To find out, they tracked the breastfeeding behaviour and health of 168 second time mothers who were originally part of the ROLO Longitudinal Birth Cohort Study for 10 years.

All the women had given birth to a child weighing under 4 kg and they and their children had check-ups 3 and 6 months, and 2, 5, and 10 years after birth by which time the mothers’ average age was 42.

At each check-up, the mothers completed a detailed health history questionnaire. This asked whether they had been diagnosed with, and treated for, depression/anxiety. They also provided information on potentially influential factors, including diet and physical activity levels.

At the check-ups, the mothers provided information on: whether they had ever breastfed or expressed milk for 1 day or more; total number of weeks of exclusive breastfeeding; total number of weeks of any breastfeeding; and cumulative periods of breastfeeding of less or more than 12 months.

Nearly three quarters of the women (73%; 122) reported having breastfed at some point. The average period of exclusive breastfeeding lasted 5.5 weeks and that of any breastfeeding for 30.5 weeks. More than a third (37.5%; 63) reported cumulative periods of breastfeeding adding up to at least 12 months.

Twenty two (13%) of the women reported depression/anxiety at  the 10-year check-up, with a further 35 (21%) reporting depression or anxiety at any time point.

Those reporting depression/anxiety at the 10 year check-up were younger,  less physically active, and had lower wellbeing scores at the start of the study than those who didn’t report this. Those women reporting depression and anxiety at any time point differed only by age at the start of the study.

Analysis of the data showed that women experiencing depression and anxiety 10 years after pregnancy were less likely to have breastfed and had shorter periods of any or exclusive breastfeeding over their lifetime.

Each week of lifetime exclusive breastfeeding was associated with a 2% lower likelihood of reporting depression and anxiety, after accounting for potentially influential factors, including alcohol intake.

This is an observational study, and as such, no firm conclusions can be drawn about cause and effect. And the researchers acknowledge that participants were relatively few in number, not ethnically or socially diverse, and that the study relied on personal recall rather than objective measures of depression/anxiety.

Nevertheless, they write: “We suggest there also may be a protective effect of successful breastfeeding on postpartum depression and anxiety, which in turn lowers the risk of maternal depression and anxiety in the longer term.” 

They explain: “The likelihood is that the association is multifactorial, as many socioeconomic and cultural factors influence both breastfeeding and mental health in addition to the impact of health history.  Additionally, women with a prior history of depression and anxiety are at risk of lower breastfeeding success, compounding the association but in the reverse direction.”

They conclude: “We know that improving breastfeeding rates and duration can improve lifetime health outcomes, reducing population level disease burden and resulting in significant healthcare savings.

“The possibility that breastfeeding could further reduce the huge burden of depression on individuals, families, healthcare systems and economies only adds to the argument for policymakers to improve breastfeeding support.”

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Telling people they might lose motivates more than telling them they might win, research shows

How managers choose to frame problems directly influences employees’ motivation to speak up at work. For managers, this is an insightful approach for building more open and collaborative teams.

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Athletes say they hate to lose more than they love to win. New research finds the same sentiment is shared in organizations.

A Virginia Tech researcher and his colleagues discovered that when managers frame work problems as a potential loss, employees are more likely to take action than when those problems are framed as potential gains. The research also revealed that when the potential loss impacts a larger group, employees are more likely to take action in the form of speaking up to a supervisor in hopes of finding a solution. The findings were recently published in the Journal of Applied Psychology.

For managers, this research suggests that framing work problems as potential losses can influence employees to speak up more.

“Employee voice occurs when suggestions are made to improve organizational functioning,” said Phil Thompson, associate professor in the Pamplin College of Business Department of Management. “From an organizational perspective, the positive outcomes of employee voice include improved performance, effectiveness, and workplace safety. From an employee level, speaking up is positively related to creativity, innovation, engagement, and ethical behavior.”

At its core, this research shows that how managers choose to frame problems directly influences employees’ motivation to speak up at work. For managers, this is an insightful approach for building more open and collaborative teams.

“When managers say, ‘If we don’t get this done, not only will you lose the $5,000 bonus, but everybody in this work group is going to lose a $5,000 bonus,’ it magnifies an employee’s motivation to act in a proactive way,” said Thompson. “This suggests that framing work problems as what will be collectively lost – compared to what can be individually lost – makes employees want to speak up more.”

Thompson was part of a research team led by Jeffery Thomas and Jonathan Booth from The London School of Economics and Mark Bolino from Oklahoma University. Together they analyzed responses from nearly 2,000 full-time employees, MBA students, and employee-supervisor pairs for their experience in situations where work problems were framed as either a gain or a loss. Across three different studies, framing something as a loss yielded employees to voice a work suggestion more.

For example, a manager dealing with a reputational crisis of their team, such as a product quality issue, can frame the problem in a way to spark helpful employee suggestions on how to resolve the issue. For example, instead of saying “if this product has great quality, our company will look really good” a manager saying “if this product is not up to quality standards, our reputation will be damaged” carries more weight for the team. When this reputational risk is shared by everyone, employees are more willing to step forward to help the problem.

In the first study, participants were asked to think about a problem at work that was significant for them. From there, they were randomly assigned to write about the potential losses or gains from that problem. They were also asked to indicate how likely they were to talk about these problems to their supervisor. Participants who reflected on their potential losses showed a 16 percent higher willingness to speak up compared to those who focused on the potential gains.

When it came to the MBA students, they read a fictional performance review scenario where a workplace problem was described. They then rated how willing they would be to speak up about that scenario if they were in the situation. One example suggested that the entire team might fall short of its goals if an issue was not addressed. This specific scenario yielded the most likelihood of speaking up 35 percent more than the scenario’s suggesting that only they would miss their goal, supporting the research’s findings that an employee is more likely to speak up when the loss impacts more people.

The third study looked at employee-supervisor pairings to understand how these relationships play out in the real world. Using pairings from across three industries, employees reported a workplace problem they encountered and their supervisor rated how often that employee spoke up on the job. While the first two studies involved hypothetical scenarios, this real-world evidence showed that employees were 8-10 times more likely to speak up when issues were framed as a potential collective loss compared with a potential collective gain. 

“This research is really geared toward managers so they can facilitate and understand how and why their employees will speak up,” said Thompson. “You can talk about the issue, but it always ends in terms of how we frame things.” 

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Yoga practice could reduce blood pressure in people with obesity

People who practiced yoga had a significant decrease in blood pressure, with systolic blood pressure lowered by an average of 4.35 mmHg and diastolic blood pressure by 2.06 mmHg.

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Practicing yoga could help people with overweight or obesity improve their cardiometabolic health, according to a study in the open-access journal PLOS Global Public Health by Widya Wasityastuti from the University of Edinburgh, Scotland, and colleagues.

Yoga is a popular form of exercise around the world, and is a gentle and accessible form of exercise for many people. To better understand the potential health benefits of yoga, the authors of this study performed a meta-analysis, examining 30 studies of yoga for its cardiometabolic benefits. They focused on studies which examined outcomes for blood pressure, lipid profiles, glucose homeostasis, markers of inflammation, and measures of antioxidants, and those which examined people with body-mass index over 23 for Asian countries, and 25 for other countries, indicating that participants had overweight or obesity. Of the 30 studies considered, 23 were conducted in Asian countries, while the remaining studies were from the United States, Germany, and Australia.

Across the 30 studies and a total of 2,689 participants, the authors found that people who practiced yoga had a significant decrease in blood pressure, with systolic blood pressure lowered by an average of 4.35 mmHg and diastolic blood pressure by 2.06 mmHg. They also found modest beneficial effects on low- and high-density lipoproteins, types of cholesterol that have been linked to an increased risk of stroke. 

The authors note that the studies analyzed were not specifically recruiting people with obesity, and there was no dose-response measured, so it is unknown how much yoga is needed to produce these effects, though the studies they analyzed favored practice of at least 180 minutes per week.

The studies also focused heavily on Asian participants, and practitioners with comorbidities were excluded from analysis. Finally, it’s important to note that due to the nature of this study, causality cannot be confirmed here despite the correlations found.

Further studies will be needed to understand whether yoga can provide similar benefits to other populations, as well as people with co-morbidities such as diabetes or heart disease.

The authors suggest that while more high-quality trials are needed, the meta-analysis supports potential benefits of yoga for cardiometabolic health in people with overweight and obesity.

The authors summarize: “Our review suggests that yoga may offer a helpful additional option for improving some aspects of cardiometabolic health in adults with overweight or obesity, particularly blood pressure.”

They add: “Yoga is often seen mainly as a wellbeing practice, but our findings suggest it may also support certain cardiometabolic health outcomes in adults with overweight or obesity.”

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Stress, BMI, and hormones linked to earlier puberty in girls

Higher levels of key steroid hormones—combined with elevated stress and body mass index (BMI)—are associated with earlier onset of puberty in girls.

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Higher levels of key steroid hormones—combined with elevated stress and body mass index (BMI)—are associated with earlier onset of puberty in girls, according to a new study at Columbia University Mailman School of Public Health.

The findings are published in The Journal of Clinical Endocrinology & Metabolism.

 Elevated prepuberty urinary levels of glucocorticoids, androgens, and progesterone were strongly linked to accelerated breast development (thelarche). Girls with high glucocorticoid levels alongside high BMI and stress entered puberty an average of seven months earlier than peers with lower levels.

“While stress and BMI have long been recognized as independent predictors of puberty, few studies have examined how they interact with a girl’s hormones,” said Lauren Houghton, PhD, assistant professor of Epidemiology at Columbia Mailman School, and first author. “Our findings challenge conventional research that has largely focused on estrogen and body size, highlighting instead the role of stress and androgens – typically thought of as male hormones– in shaping pubescent development.”

The strongest associations were observed for progesterone, androgens, and glucocorticoids, indicating that multiple hormonal pathways—not just estrogen—play a critical role in the timing of puberty.

For example:

  • Higher glucocorticoid, androgen, and progesterone metabolites were associated with earlier onset of puberty
  • Elevated androgens and progesterone were also linked to a longer duration of puberty
  • Estrogen metabolites were associated with delayed onset, not acceleration
  • The effects of hormones on puberty timing were significantly modified by BMI and stress levels.

 Notably, the associations were consistent regardless of family history of breast cancer.

“Our objective was to identify the full set of hormonal patterns linked to accelerated puberty and test whether BMI and stress modify this relationship,” said Houghton, who is also assistant professor at the Herbert Irving Comprehensive Cancer Center at Columbia. “We predicted that girls with elevated BMI and stress would experience the earliest onset—and that the stress response shifts during this key time for girls.”

The researchers drew on data from the LEGACY Girls Study, a cohort of 1,040 girls ages 6 to 13 recruited across the U.S. States and Canada. Participants were followed every six months with clinical assessments, questionnaires, and biospecimen collection.

The analysis included 327 girls who were at the pre-puberty stage at baseline and provided urine samples at least one year before the onset of puberty. Houghton and colleagues measured a comprehensive panel of steroid metabolites using first-morning urine samples and tracked puberty development using validated clinical scales.

Mothers of the girls completed an Internalizing Composite Scale, which includes subscales for anxiety, depression, and other at-risk status. They also provided information on girls’ family history of all cancers as well as on pregnancy and infancy, including birth weight and their child’s race and ethnicity. Trained research staff measured height and weight twice every 6 months. 

“Unlike prior research, this study simultaneously examined hormonal patterns, BMI, and psychosocial stress—captured through standardized behavioral assessments—within the same cohort,” said senior author Mary Beth Terry, PhD, professor of Epidemiology at Columbia Mailman School, and the Herbert Irving Cancer Center, and Silent Spring Institute.  “Interestingly, we also learned that the associations were consistent regardless of family history of breast cancer.”

The findings may help explain the ongoing trend toward earlier puberty and point to actionable prevention strategies, observed the authors.

 “Stress-reducing interventions and healthy lifestyle changes may help delay early puberty and improve long-term health outcomes,” said Houghton. ‘Because early puberty is linked to increased breast cancer risk later in life, the results have important implications for both pediatric care and public health.”

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