How much weight, in kilograms, is considered overweight?

The term "overweight" refers to a person or individual whose weight exceeds the normal or healthy range for their height and build. It's typically determined by calculating body mass index (BMI), which is a measure of body fat based on height and weight. 

However, the specific weight considered overweight can vary based on factors like age, sex, and muscle mass. Generally, a BMI between 25 and 29.9 is considered overweight, while a BMI of 30 or higher is classified as obese.

For example, if someone's height and other factors suggest that they should weigh around 70 kilograms for optimal health, but they actually weigh 80 kilograms, they would be considered overweight.