While lifestyle choices, including diet and activity level, play an important role in a person’s risk of obesity, genetics can also shape natural tendencies toward weight gain or loss. In fact, genes ...

From the ability to detect the smell of wet soil to the scent of ripe fruit, the human olfactory system has evolved over ...

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 ...

What if some of the risk of anxiety and depression in children is not only about the genes they inherit, but also about their parents' genetic dispositions and how these influence the home environment ...

Did humans lose their sense of smell? A study on the Orang Asli people reveals that hunter-gatherers maintain ancestral smell genes for foraging, while farmers' olfactory receptors evolved alongside ...

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 ...

It’s an age-old question: is nature or nurture more responsible for how we turn out in life? Scientists have long believed that some combination of our genes and environment – our diets, lifestyles, ...

U.S. Secretary of Health, Robert F. Kennedy Jr., has expressed views on the causes of autism that clash with scientific evidence. With statements like "genes don't cause an epidemic," he emphasizes ...

An individual’s genetics and their environment both shape their personality. However, opinions differ on the degree to which each of these factors influences personality, and how they contribute to ...