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Twin Studies

All articles tagged with #twin studies

neuroscience1 year ago

"Environmental Influence on Emotional and Cognitive Abilities Trumps Genetic Factors"

A study involving twins suggests that environmental factors may have a greater impact on certain cognitive abilities, such as metacognition and mentalizing, than genetics. Twins raised in similar educational and socio-economic environments displayed similar cognitive traits, challenging previous beliefs about the heritability of these skills. The findings highlight the crucial role of family environment in shaping cognitive abilities and suggest that metacognition and mentalizing are more influenced by environmental factors than genetics.

via Neuroscience News|
#cognitive-abilities#environment#genetics
health1 year ago

Navigating the Bidirectional Link Between Body Weight and Emotional Eating

A study analyzing data from the Twins Early Development Study and the UK Adult Twin Registry has found a bidirectional relationship between body mass index (BMI) and depressive symptoms during adolescence, with depressive symptoms contributing to subsequent weight gain and increased BMI leading to the emergence of depressive symptoms. After the age of 16, only depressive symptoms contribute to later weight gain. The research sheds light on the nature of links between depression and BMI during adolescence, but it also has limitations, as it was conducted on twins and assumes no interactions between genes and environment.

via PsyPost|
#adolescence#bidirectional-relationship#body-mass-index
health2 years ago

Uncovering the Genetic Connection: Eating Disorders and Alcohol Use

A comprehensive study of adolescent twins has revealed a genetic link between disordered eating and alcohol use disorders (AUDs), with worse outcomes, including fatality, when these conditions co-occur in younger teens. The study, conducted in the U.S. and Sweden, found that the correlation between disordered eating and alcohol use is influenced differently in males and females. The research highlights the importance of sex-specific treatment strategies and could help identify vulnerable teens. Screening for both conditions in late adolescents presenting with symptoms could improve detection and treatment. Further research is needed to understand specific genetic and environmental factors affecting co-occurring conditions.

via Neuroscience News|
#adolescents#alcohol-use-disorders#eating-disorders
science-and-health2 years ago

"The Intriguing World of Twins: Unidentical Phenomena and Other Fascinating Facts"

The Twins Days Festival in Twinsburg, Ohio, is the largest gathering of twins in the world, highlighting the increasing number of twin births in the United States. Twin studies provide valuable biological information for geneticists, helping them understand diseases, eating disorders, obesity, sexual orientation, and psychological traits. Identical twins share 99.99% of their DNA, making them ideal for studying the impact of genes and the environment on traits. Scott Kelly's year in space altered his genes, changing his DNA expression, immune system, bone formation, and eyesight. Studies suggest that heredity plays a significant role in determining sexual orientation, with genetics outweighing other influences such as parenting and environment.

via National Geographic|
#genetics#nature-vs-nurture#science-and-health