Nutrient intake amount estimation system, nutrient intake amount estimation method, nutrient intake amount estimation device, storage medium, and nutrient intake amount output method

A nutrient intake amount estimation device comprising:

• an acquisition part configured to acquire an output value that is output by a sensor disposed in a toilet space after detecting an excretion smell related to excretion of a user of the toilet space;
• and
• an estimation part configured to estimate, in accordance with an input based on an output value of the sensor, an estimated nutrient intake amount that is an amount of nutrients taken by the user by using an estimation model configured to indicate a correlation between an amount of nutrients not consumed by the user and the output value of the sensor.

A nutrient intake amount estimation system comprising:

• a sensor that is disposed in a toilet space, and configured to detect an excretion smell related to excretion of a user of the toilet space;
• an estimation unit configured to estimate, in accordance with an input based on an output value of the sensor, an estimated nutrient intake amount that is an amount of nutrients taken by the user by using an estimation model configured to indicate a correlation between an amount of nutrients not consumed by the user and the output value of the sensor.