A health sensing device is described for placement on a user. The device may include a sensor, a filter, and a transmitter. The sensor is configured to sense one or more factors relating to an indicator of a health related condition or occurrence. The filter is configured to evaluate a signal from the sensor and determine if the indicator has been detected. The transmitter is arranged for initiating a transmission based on a signal from the filter. The sensor can include one or more microphone devices, accelerometers, and/or MEMs devices. A method of monitoring a user for a health related condition is also described.
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