Amanda Leigh Mascarelli

All Stories by Amanda Leigh Mascarelli

  1. Brain

    Identifying as a different gender

    People grappling with gender identity issues (and their families) face difficult choices. As society increasingly accepts transgender youth, more research is needed to understand how better to support them.

  2. Health & Medicine

    Explainer: How the body sculpts a child

    The human fetus is prepared to develop as a female. But if its chromosomes or other chemical signals instruct it to become male, then gene pathways will flip some chemical switches to create masculine organs and features.

  3. Brain

    Gender: When the body and brain disagree

    Researchers are working to untangle the highly complex relationship between our biology and our identity. In some individuals, a conflict can emerge, leading to a transgender identity.

  4. Brain

    Explainer: Sometimes the body mixes up male and female

    Certain medical conditions demonstrate how complicated biology can be. Being genetically male and female will not guarantee that your body won’t sometimes contain one or more features of both.

  5. Animals

    Explainer: Male-female flexibility in animals

    Some animals behave as if they were the opposite sex; others can even change their sex — and still produce offspring.

  6. Brain

    Eating disorders: The brain’s foul trickery

    Experts on eating disorders are probing why sometimes deadly chemical changes can distort how much the brain says we need to eat.

  7. Health & Medicine

    Recovery help from the blogosphere

    And some who have been there now are sharing tips on what it takes to become a successful survivor.

  8. Health & Medicine

    You can be too thin

    Eating disorders aren’t about vanity. They are mental illnesses that can prove deadly.

  9. Health & Medicine

    The media’s dangerous influence on body image

    A study found how powerful TV and ad messages can be in distorting the attitudes about body image among young girls in Fiji.

  10. Health & Medicine

    The dangerous rise of electronic cigarettes

    Electronic cigarettes were originally advertised as a way for smokers to wean themselves off of cigarettes. In fact, e-cigarettes are helping hook a whole new generation of young people on nicotine — an addiction that may transition back to tobacco.