Women with 1 and 160cm are underweight between 48.6kg-43.2kg, and men with 160cm are underweight between 56.7kg-50.4kg. We can calculate the standard weight of a person of this height through the formula, and refer to the range of light weight to get this result.

2. If you want to know how much a person has lost weight, you must first calculate the standard weight of this person. You can refer to the calculation formula provided by the World Health Organization. The height of women is reduced by 70 times 60%, and the height of men is reduced by 70 times 70%.

3. It can be concluded that the standard weight of 160cm is 54kg for women, while that of 160cm for men is 63kg, and the lean body weight is usually lower than the standard weight 10% to 20%.

4. From the above data, it can be inferred that the lean body weight of 160cm women is between 48.6kg-43.2kg, while that of 160cm men is between 56.7kg-50.4kg. If it is still below these weights, it is underweight.