This video shows that being overweight can be due to genes. For some people, being overweight is not because they lack of willpower, but lack of hormones, such as leptin, that signal brains to stop eating. However, lack of leptin is not the only factor that cause obesity. Teresa Godfrey, the obesity patient in this video, has a mutated and non-functional MC4 receptor. This null mutation causes...

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The video in this website introduces research in genes related to aging, such as sir2 and daf-2. Research with different model organisms is shown in this movie: yeast, worms (C. elegance), flies and mice. Biotechnologies such as gene arrays and fluorescent microscopy are also shown. In addition, the website has a flash simulation showing how sir2 slow down aging in yeasts. For more...

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