Weight must be appropriate for age, height, sex, and body frame, using tools like Body Mass Index (BMI) for adults (18.5-24.9 is healthy) or BMI-for-age percentiles for children (comparing to peers), with doctors recommending personalized healthy ranges rather than a single number. Children's weight-for-age changes significantly as they grow, so growth charts are key, while for adults, BMI, ethnicity, and muscle mass matter.
Your healthy weight range in Australia is generally a Body Mass Index (BMI) between 18.5 and 24.9, calculated from your height and weight, indicating a normal weight, but it's a guide, with ranges like 18.5-24.9 considered healthy, 25-29.9 overweight, and 30+ obese, with waist circumference also important for assessing risk, say NSW Health, Medibank, and Healthdirect, Australian Institute of Health and Welfare, Better Health Channel, and Cancer Australia.
70kg (about 154 lbs) can be a healthy weight, but it depends heavily on your height, body composition, and overall health, as it falls within the normal Body Mass Index (BMI) range for many people but could be overweight for shorter individuals or underweight for very tall ones. For instance, a person 1.75m (5'9") tall with 70kg has a normal BMI, but height is key, so consulting BMI charts or a doctor is best for a personalized assessment.
Adult Wt|Ht Obesity Chart
An example is shown for an individual who weighs 80 kg (176 lbs) and stands 1.75 meters (175 cm or 69 inches) tall. Those measurements put that individual into the "overweight" category. This chart is to be used for adult data (male or female). To convert pounds to kilograms divide by 2.2.
In Australia, a size 12 is generally considered a "straight" or "missy" size, falling within average ranges, but due to vanity sizing and inconsistent measurements across brands, it can represent different body sizes; health-wise, a larger waist (over 88cm for women) is a risk factor, and the actual average Australian woman is now closer to a size 16-18, meaning a size 12 is smaller than average, though "fat" is a subjective term related to body image and health metrics like BMI, not just a single number.
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.
Generally used to refer to males who could be overpowered and taken advantaged of by other males who are above 200 pounds. Could also be used as a general statement about a male weighing approximately 140-160 pounds or 60-70 kilograms.” - Urban Dictionary.
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.
As in other stages of life, elevated body mass index (BMI) in older adults can increase the likelihood of developing health problems. These include heart disease, high blood pressure, stroke, and diabetes. Losing weight or maintaining a healthy weight can help decrease these risks.
For Infants < 12 months: Weight (kg) = (age in months + 9)/2 For Children aged 1-5 years: Weight (kg) = 2 x (age in years + 5) For Children aged 5-14 years: Weight (kg) = 4 x age in years.
Infants 0-12 months: weight (kg) = (0.5 × age in months) + 4. Children 1-5 years: weight (kg) = (2 × age in years) + 8. Children 6-12 years: weight (kg) = (3 × age in years) + 7.
The 3-3-3 rule for weight loss is a simple, habit-based method focusing on three key areas: 3 balanced meals a day, 3 bottles (or ~1.5L) of water by 3 PM, and 3 hours of physical activity per week, aiming for consistency over complex diets. It simplifies fat loss by establishing rhythm through consistent eating, adequate hydration to support metabolism, and regular movement, promoting sustainable health without intense calorie counting or restrictive rules, says Five Diamond Fitness and Wellness, Joon Medical Wellness & Aesthetics, and EatingWell.
You Might Be Eating Too Little
This phenomenon is called “starvation mode,” and while your body isn't actually starving, it will naturally hold onto whatever calories it receives in an effort to help you maintain your energy balance.
Fastest ways to lose weight usually combine:
A 70kg woman usually falls into a Medium (M) to Large (L) dress size, depending heavily on height, body proportions (bust, waist, hips), and the specific brand's sizing, with some charts placing 70kg at the upper end of Medium and others at the lower end of Large. For example, some guides link 70kg with a Medium, while others connect it to a Large, so checking the brand's specific size chart with your measurements (bust, waist, hips) is crucial.
The country with the highest adult obesity rate is typically one of the Pacific Island nations, with Nauru often cited as number one, followed closely by American Samoa, Tokelau, and the Cook Islands, with rates exceeding 69% of the adult population. These island nations in Oceania consistently rank highest due to complex factors like diet changes and genetic predispositions.
New research from body-positive fashion app Mys Tyler shows that the average Australian woman wears size 16. The data was pooled from over 32,000 Mys Tyler users, which has been weighted to be representative of Australian women aged 18 to 75 as well as verified by global research firm Insights Exchange.
According to the National Heart, Lung, and Blood Institute , a good weight for a person who is 5 foot (ft) 4 inches (in) tall ranges from 110–140 pounds (lbs).
You may lose a total of 1 to 3 inches (2.5 to 7.5 centimeters) in height as you age. You can help lessen height loss by following a healthy diet, staying physically active, and preventing and treating bone loss. Smaller leg muscles and stiffer joints can make moving around harder.
A 45 kg woman may fall within the underweight category based on a BMI calculator, yet her overall health could be jeopardized by this condition.