A 50 kg girl would generally be considered to have a healthy weight if her height is between approximately 147 cm (4'10") and 160 cm (5'3").
If you're 165 cm tall, a healthy weight is between 54 kg and 68 kg.
So, based on this devine formula, an ideal body weight for a 5'2” woman is approximately 50.1 kg or 110 lb.
50 kg (about 110 lbs) isn't a "perfect" weight for everyone; it depends heavily on your height, body composition (muscle vs. fat), age, sex, and frame size, with it potentially being healthy for shorter individuals but underweight for taller people, so using a BMI calculator and consulting a doctor is best for a personalized assessment.
At 5'7, 50kg seems very underweight. I would focus less on your numerical weight and more on the strength and flexibility of your body.
Underweight: BMI is below the 5th percentile age, gender, and height. Healthy weight: BMI is equal to or greater than the 5th percentile and less than the 85th percentile for age, gender, and height. Overweight: BMI is at or above the 85th percentile but less than the 95th percentile for age, gender, and height.
For adults ages 20 years and older, BMI incorporates weight and height, but it does not take age or sex into account. A woman tends to have more body fat than a man with the same BMI. Likewise, an older person tends to have more body fat than a younger person with an equal BMI.
For a height of 4' 11" (about 150 cm), a healthy weight range varies by sex, but generally falls between 40.8 kg to 49.9 kg (90-110 lbs) for men, and 39 kg to 47.6 kg (around 86-105 lbs) for women, though individual factors like body frame, muscle mass, and age influence this ideal, so consult a health professional for personalized advice.
Ideal body weight (men) = 50 kg + 1.9 kg for every inch above 5 feet. Ideal body weight (women) = 49 kg + 1.7 kg for every inch above 5 feet.
A healthy weight range for a 12-year-old girl is approximately 68 to 125 pounds (31-57 kg). The median weight for a 12-year-old girl is approximately 90 pounds (41 kg). Factors such as height, genetics, and overall health influence weight.
If you are underweight (BMI less than 18.5kg/m2), you may be malnourished and develop: compromised immune function. respiratory disease. digestive diseases.
When you eat too few calories, your body can react in ways that might cause weight gain instead of loss. 1. Stress Hormones: Low calorie diets can increase stress hormones like cortisol. High levels of cortisol might make your body hold onto fat rather than burn it.
Causes
The Devine formula for calculating ideal body weight in adults is as follows: Male ideal body weight = 50 kilograms (110 lb) + 0.9 kilograms (2.0 lb) × (height (cm) − 152) Female ideal body weight = 45.5 kilograms (100 lb) + 0.9 kilograms (2.0 lb) × (height (cm) − 152)
Your most consistent and "true" weight is generally in the morning, after using the bathroom and before eating or drinking anything. This provides the most accurate baseline because your body has processed the previous day's food and fluids overnight, resulting in less fluctuation from digestion, water intake, and daily activities. Weighing at the same time, in the same minimal clothing, and under consistent conditions (like in the morning) helps track trends better than weighing at night or randomly.
If you weigh 107 pounds or less at this height, you are considered underweight with a BMI of 18.4. A healthy weight range for that woman would be 108 to 145 pounds. BMI is just one way to measure healthy weight.
One main sign of a growth problem is when a child grows less than about 1.4 inches (3.5 cm) a year after their 3rd birthday. In other cases, a baby may be abnormally small for their gestational age at birth. Many conditions that cause growth problems can be managed or corrected with medical treatment.
Sleep deprivation has long been linked to an increased risk of becoming overweight or obese. Researchers found that getting less than seven hours of sleep resulted in weight changes and may lead to weight gain, either by increasing food intake or decreasing energy burned.