Final answer:
Consistent weight gain of more than 1 kg/week is often a sign of caloric excess and may lead to obesity, which poses significant health risks, including type 2 diabetes and hypertension.
Step-by-step explanation:
A weight gain of more than 1 kg/week likely indicates an energy imbalance where the body is storing unused energy from food as fat. This may be due to consuming more calories than the body needs, leading to weight gain and potentially obesity, a condition where the body mass index (BMI) is 30.0 kg/m² or greater. Obesity significantly increases health risks, such as type 2 diabetes and hypertension. While weight fluctuations are normal to an extent, consistent gains of more than 1 kg per week can be a warning sign and should be discussed with a healthcare professional.