Does Valuing Happiness Lead to Well-Being?

Happiness has become one of the most important life goals worldwide. However, does valuing happiness lead to better well-being? This study investigates the effect of valuing happiness on well-being using a population-based longitudinal survey of Dutch adults (N = 8,331) from 2019 to 2023. Random-intercept cross-lagged panel models indicated that those who valued happiness generally exhibited higher well-being as manifested by life satisfaction, more positive affect, and less negative affect. However, increases in valuing happiness did not result in changes in life satisfaction 1 year later and had mixed emotional consequences (i.e., increasing both positive and negative affect). Additional analyses using fixed-effects models indicated that valuing happiness had contemporaneous positive effects on well-being. These findings indicate that endorsing happiness goals may have immediate psychological benefits but may not necessarily translate into long-term positive outcomes.

Vitamin D Supplementation for Patients with Dysmenorrhoea: A Meta-Analysis with Trial Sequential Analysis of Randomised Controlled Trials.

Vitamin D reduces prostaglandin levels and inflammation, making it a promising treatment option for dysmenorrhoea. However, its effects on pain intensity in different types of dysmenorrhoea remain unclear. We examined whether vitamin D supplementation decreases pain intensity in patients with dysmenorrhoea. The Cochrane Library, Embase, Google Scholar, Medline, and Scopus databases were searched from inception to 30 December 2023. Randomised controlled trials (RCTs) evaluating vitamin D supplementation effects on such patients were included. The primary and secondary outcomes were measured by the changes in pain intensity and rescue analgesic use, respectively. Pooled mean differences and rate ratios were calculated using a random-effect model; trial sequential analysis (TSA) was also performed. Overall, 11 studies involving 687 participants were included. Vitamin D supplementation significantly decreased pain intensity in patients with dysmenorrhoea compared with controls (pooled mean difference, -1.64; 95% confidence interval, -2.27 to -1.00; p < 0.001; CoE, moderate; I2 statistic, 79.43%) and indicated substantial heterogeneity among the included studies. TSA revealed that the current RCTs provide sufficient information. In subgroup analyses, vitamin D supplement reduced primary dysmenorrhoea pain but not secondary dysmenorrhoea pain. In conclusion, although substantial heterogeneity persists, vitamin D supplementation decreased pain intensity in patients with dysmenorrhea, especially in those with primary dysmenorrhoea.

Nostalgia and Health: A Longitudinal Network Analysis of Different Nostalgic Experiences.

The study examines the long-term dynamics of the relationship between nostalgia and health using a population-based longitudinal sample in the Netherlands (N = 958). We identified five types of nostalgia-Home, Peers and shared experiences, Emotional security, Innocence, and Leisure and media-and explored their relationships with health using network analyses. We found bidirectional relationships between nostalgia and health over a 1-year interval. Self-rated health and mental health negatively predicted nostalgia centered on Peers and shared experiences, Emotional security, and Innocence. Nostalgia, especially Emotional security and Innocence, negatively predicted self-rated health and mental health. The effects were further moderated by age. Cross-lagged relationships from nostalgia to health were found in younger but not older adults, while relationships from health to nostalgia were found primarily among older adults. In sum, we demonstrate the importance of considering age and type of nostalgia when exploring long-term relationships between nostalgia and health.

Filial Piety and the Development of Independence and Interdependence During Emerging Adulthood: A Longitudinal Study of Taiwanese Adolescents.

While filial piety has been widely studied in Confucian-influenced societies, little is known about how it may influence the development of emerging adults' independence and interdependence. Using a population-based longitudinal study in Taiwan (N = 3,149; 49.5% females), this study examined the association between filial piety in adolescence (aged 13-15) and independence and interdependence in emerging adulthood (aged 22). Results show that greater adherence to filial piety in adolescence predicts higher independence in emerging adulthood. Additionally, greater adherence to filial piety predicts higher interdependence for females, but not males, when parents hold traditional gender-role attitudes. This study underscores the significance of cultural norms and parental gender-role attitudes in shaping individuals' development during emerging adulthood.