Naked Scientists Podcast

Naked Scientists episode

Sun, 18th Jan 2009

Obesity in Your Genes

An Obese Teenager with Central Obesity, side view (c) FatM1ke

Is obesity in your genes? This week we find out how hormones, genetics and even your mother's diet contribute to your chances of becoming obese and succumbing to obesity-related diseases. We also take a look into the surgical way to lose weight fast - liposuction, figure out how the lengths of your fingers predicts your financial prowess and uncover a new source of antibiotics from the sea. Plus, is there life on Mars? We talk with the NASA scientist who recently discovered methane on the red planet to find out what this might mean, and in a fruity edition of Kitchen Science we explore the wobbly chemistry of jelly!

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In this edition of Naked Scientists

Full Transcript

  • 11:09 - Does methane on Mars mean life?

    Scientists have discovered methane on Mars, which comes and goes with the seasons. Could this be evidence of methanogenic bacteria beneath the surface of the red planet?

  • 18:10 - Science of fruit jellies

    Find an excuse for a party, make some party food, and find out why some kinds of fruit work in jelly and others don't!

  • 20:44 - Hormones of Obesity

    Obesity is a huge problem, but what makes us obese? Steve Bloom joins us from Imperial College London to explain why our obesogenic environment is causing us trouble...

  • 30:00 - Surgical Fat Loss - Liposuction

    Liposuction may be the easiest way to lose weight quickly, though it's an expensive option. But how does it really work, and is it as healthy as losing weight the longwinded way?

  • 37:08 - Born Obese? Does your mother's diet affect your future?

    Are overweight parents more likely to have obese children? It could be that a mother's diet has lifelong influence on a child's likelihood of becoming obese, or developing obesity related diseases...

  • 44:38 - How is petrified wood formed?

    I've heard stories of wooden fence posts becoming petrified over time, but I'm not sure if this is scientifically possible. How is petrified wood formed, and what exactly does it consist of?



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