Why do some people live to 100 while their sibling dies decades earlier? Is it luck, lifestyle, or something written into ...

Is Obesity Genetic or Environmental? Get All the Details This article was reviewed by Lynn Marie Morski, MD, JD. Key ...

A reanalysis of twin data from Denmark and Sweden suggests that how long we live now depends roughly equally on the genes we ...

How much do your genes determine how long you'll live? It's a question that fascinates us, and one that's been debated for ...

New study in Science suggests genetics might account for 50-55% of human lifespan, a significant shift from previous beliefs.

Twin studies can help geneticists determine whether some trait or condition is caused by the environment, or by genetics. Since identical twins carry basically the same genome, if a trait is due to ...

Add Yahoo as a preferred source to see more of our stories on Google. While some diseases have been linked to genetic mutations, experts think that a wide range of conditions may be caused by ...

Your surroundings may influence your social behavior more than you realize. New research from the Brain Research Institute at ...

Environmental factors significantly influence the development of allergic diseases, overshadowing genetic predisposition. Identical twins showed higher incidences of atopic dermatitis, rhinitis, and ...

A study published in the Journal of Psychopathology and Clinical Science suggests that genetic and environmental factors are more significant factors in adverse mental health effects than moderate ...