Since Lillian consumes 2100 kcal of foods and beverages and expends a total of 1800 kcal, then her body is in a state of positive energy balance.
The expression 'state of positive energy balance' indicates a difference between the calories consumed and burned.
This state of positive energy balance is due to higher consumption of calories regarding calories burned each day.
In conclusion, since Lillian consumes 2100 kcal and expends a total of 1800 kcal, then her body is in a state of positive energy balance.
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