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Related Concept Videos

Bone Disorders01:29

Bone Disorders

Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
Changes in the Appendicular Skeleton with Age01:09

Changes in the Appendicular Skeleton with Age

The upper and lower limb initially develops as a small bulge called a limb bud, which appears on the lateral side of the early embryo. The upper limb bud appears near the end of the fourth week of development, with the lower limb bud appearing shortly after.
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...
Relationship with Other Adult Family Members and Siblings01:29

Relationship with Other Adult Family Members and Siblings

Other adult family members and siblings play a crucial role in shaping children’s social and emotional development. While parents or primary caregivers are often the central figures in early attachment and socialization, other adults in a child’s life, such as grandparents, aunts, and uncles, can significantly influence developmental outcomes. These influences depend on each adult’s personality and may help compensate when a primary caregiver is emotionally distant or inconsistent. For...
Relationship Formation02:12

Relationship Formation

What do you think is the single most influential factor in determining with whom you become friends and whom you form romantic relationships? You might be surprised to learn that the answer is simple: the people with whom you have the most contact. This most important factor is proximity. You are more likely to be friends with people you have regular contact with. For example, there are decades of research that shows that you are more likely to become friends with people who live in your dorm,...
Companionate Love01:27

Companionate Love

Companionate love is a fundamental aspect of long-term relationships, characterized by deep affection, mutual respect, and emotional intimacy. Unlike passionate love, which is driven by intense emotions and physical attraction but often declines over time, companionate love remains stable and can even strengthen with shared experiences and commitment. Psychological and biological mechanisms underpin this enduring form of love, influencing relationship longevity and satisfaction.Stability and...
Relationship Growth01:27

Relationship Growth

Interpersonal relationships progress through stages, beginning with awareness and moving toward mutuality, where emotional connections deepen. While many relationships remain at moderate levels of mutuality, deeper connections form through self-disclosure, trust, and interdependence.Self-DisclosureSelf-disclosure involves revealing personal information, starting with surface-level details and gradually progressing to more intimate content. As trust grows, individuals feel more comfortable...

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Related Experiment Video

Updated: Jun 8, 2026

Scanning Skeletal Remains for Bone Mineral Density in Forensic Contexts
07:56

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Published on: January 29, 2018

Bone changes in spouses having shared lifestyle for 40 years.

Agnès Ostertag1, Martine Cohen-Solal, Yoann Madec

  • 1U606 Inserm, Hôpital Lariboisière, Université Paris Diderot Paris 7, 2, rue Ambroise-Paré, 75010 Paris, France.

Joint Bone Spine
|September 21, 2010
PubMed
Summary

Spouses share environments, but bone loss differs by gender. Environmental factors influenced bone density changes differently in men and women, indicating gender-specific responses to shared living conditions.

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Area of Science:

  • Gerontology and Bone Health
  • Environmental Epidemiology
  • Gender-Specific Health Outcomes

Background:

  • Spousal concordance for various diseases is established, yet its role in bone loss remains unexplored.
  • Long-term cohabitation suggests shared environmental exposures could impact health.
  • Understanding spousal concordance in bone density changes is crucial for public health initiatives.

Purpose of the Study:

  • To investigate whether spouses exhibit similar bone density changes over time.
  • To determine if shared environmental factors influence bone loss concordance between partners.
  • To explore gender-specific effects of environmental exposures on bone mineral density.

Main Methods:

  • Prospective study of 104 couples with over 1 year of follow-up (average 5±3 years).
  • Evaluation of bone mineral density (BMD) changes at the femoral neck, adjusted for covariates.
  • Assessment of lifestyle and biological parameters, including BMI, 25-hydroxyvitamin D3 (25-OHD(3)), calorie intake, calcium intake, and physical activity.

Main Results:

  • Significant bone loss was observed in wives (-0.0023 g/cm(2)/yr) but not in husbands (0.0016 g/cm(2)/yr).
  • Changes in BMD were not correlated between spouses (r=0.0004, P=0.99), indicating a lack of concordance.
  • In women, 25-OHD(3) levels and interactions with tobacco and calorie intake explained 37% of bone loss variance.

Conclusions:

  • Environmental factors do not appear to influence bone density changes similarly across genders.
  • Gender plays a significant role in how individuals respond to shared environmental exposures regarding bone health.
  • Further research is needed to elucidate gender-specific mechanisms of bone loss.