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Scientists ID Genetic Factors that Influence Body Weight and Neurological Disorders

By Guest PostFebruary 26, 2016Healthantoine snijders, body weight, genetic factors, jian hua mao, neurological disorders, susan celniker

Berkeley Lab researchers study mice to shed light on genetic risks of Alzheimer’s, other diseases

Many neurological disorders, such as Parkinson’s disease and Alzheimer’s disease, are marked by impaired motor skills. In addition, growing evidence suggests there’s a link between some neurodegenerative diseases and body weight. A recent NIH study, for example, found that adults who are obese or overweight at midlife may be at risk for earlier onset of Alzheimer’s disease. (more…)

Time adds a wrinkle to nature and nurture

By Guest PostJanuary 11, 2015HealthDNA, environmental conditions, framingham heart study, genetic factors, homo rudolfensis, michael helfenbein, michel marechal, Nature, nicholas christakis, nussknacker menschen, scientific data, time, wrinkle

Nature and nurture have found a new companion — historical context.

A new study has produced the best evidence yet that the role of genetics in complex traits, including obesity, varies over time. Both the era in which scientific research is conducted and the era in which subjects were born may have an impact on the degree to which genetic factors are present in scientific data. (more…)

Who’s Afraid of Math? Study Finds Some Genetic Factors

By Guest PostMarch 27, 2014Education, Scienceanxiety, christopher manser, environmental factors, fraternal twins, genetic factors, math skills, same sex, schockwelle, seismisches echo, zombie stern

Genetics plays a role, but researchers say environment still key

COLUMBUS, Ohio – A new study of math anxiety shows how some people may be at greater risk to fear math not only because of negative experiences, but also because of genetic risks related to both general anxiety and math skills.

The study, which examined how fraternal and identical twins differ on measures of math anxiety, provides a revised view on why some children – and adults – may develop a fear of math that makes it more difficult for them to solve math problems and succeed in school. (more…)

Genomic Detectives Crack the Case of the Missing Heritability

By Guest PostFebruary 23, 2013Scienceantibiotics, bert vogelstein, caffeine, case, caused by mutation, common dna spelling, crohns disease, dna code, dna variation, drugs, environmental factors, eye color, family traits, genetic causes, genetic code, genetic factors, genomic detectives, gwas, ian ehrenreich, joshua bloom, leonid kruglyak, metal compounds, missing heritability, missing heritability problem, model organism, patterns of inheritance, physical characteristic, princeton university, regions of dna, researcher, risk, risk of diseases, schizophrenia, southern california, thuy lan lite, type 2 diabetes, university, variation, wesley loo, yeast cell

Despite years of research, the genetic factors behind many human diseases and characteristics remain unknown. The inability to find the complete genetic causes of family traits such as height or the risk of type 2 diabetes has been called the “missing heritability” problem.

A new study by Princeton University researchers, however, suggests that missing heritability may not be missing after all — at least not in yeast cells, which the researchers used as a model for studying the problem. Published in the journal Nature, the results suggest that heritability in humans may be hidden due only to the limitations of modern research tools, but could be discovered if scientists know where (and how) to look. (more…)

Public Obsession with Obesity May be More Dangerous than Obesity Itself, UCLA Author Says

By Guest PostDecember 23, 2012Culture, Healthabigail saguy, body mass, cervical cancer, civil rights, confirmation bias, diabetes, genetic factors, neighborhood limitations, obesity, obesity epidemic, obesity task force, poor nutrition, social factors, socioeconomic status, sociologist, stress, third factor, ucla, us population

Much has been made about who or what is to blame for the “obesity epidemic” and what can or should be done to stem the tide of rising body mass among the U.S. population.

A new book by a UCLA sociologist turns these concerns on their head by asking two questions. First, how and why has fatness been medicalized as “obesity” in the first place? Second, what are the social costs of this particular way of discussing body size? (more…)

Spare the Rod, Spoil the Child?

By Guest PostSeptember 23, 2010Culture, Generalanxiety disorders, biochemical imbalances, coercive parenting, françoise maheu, genetic factors, grabbing a child, harsh parenting, long-terms risks, physiological effect, symptoms

Grabbing a child firmly by the arm, yelling and repeatedly punishing him or her may not be without long-terms risks, according to researchers from the Université de Montréal. They are studying how this harsh parenting can impair the emotional development of a child, possibly leading to anxiety disorders such as social phobia, separation anxiety and panic attacks.

(more…)

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