Without the hype of Airo, a Swiss research team at ETH-Zurich has designed and is testing on mice a blood fat-detecting capsule that releases a satiation hormone when excessively high fat levels are detected, suppressing appetite. The circuit in the capsule can measure several types of fat, including several saturated and unsaturated animal and vegetable fats. If further developed, this could have impact on weight loss for humans.  Gizmag, Daily Mail