22:32The Food ChainHealth lessons with the HadzaBBC World Service Duration: 27 minutes Thu 20th Jul 2017, 22:32 on BBC World Service East and Southern AfricaAvailable for over a yearListen nowCould East African hunter-gatherers lead us to the ideal human diet? Show more GenresFactualFood & DrinkFormatsMagazines & ReviewsBrandThe Food Chain Source: BBC Online