Thinking of Losing Weight? Know These Two Things Before You Start

For years, we’ve been thinking to chase a lower number on the weighing scale. Diet harder, eat less, Lose weight. But do you know the real key to better health isn’t losing weight, it’s about building muscle.

The weighing scale cannot tell you how strong your metabolism is, how well your body regulates blood sugar, or how resilient you’ll be as you age. Muscle is metabolically active tissue that supports fat burning, hormone balance, mobility, and long-term disease prevention. In many cases, increasing muscle mass has a greater impact on health than simply reducing body weight.

Understanding why muscle mass is more important than the low number on the weighing scale can completely change how you approach fitness and long-term well-being.

Weight Loss vs Body Composition: What’s the Difference?

When starting a weight-loss journey, it’s important to understand two key concepts, fat loss and muscle preservation. Most people focus only on reducing the numbers on the weighing scale, but the scale cannot differentiate between fat, muscle, and water. This means, when you lose weight, especially through rapid or restrictive dieting you may not only lose body fat, but also the valuable lean muscle mass. Losing muscle can slow down your metabolism and affect overall strength and health. And moreover, being thin does not always mean that you have a low body fat percentage. Healthy and sustainable weight loss should focus on reducing excess fat while preserving muscle mass to maintain proper physiological balance and long-term well-being.

How to Measure Body Fat Percentage?

Total body weight is composed of water, fat, muscle mass, bone minerals, and other soft tissues. Therefore, weight loss should be a strategic process aimed at reducing excess body fat without compromising essential tissues like muscle and bone. There are several advanced medical tools to measure body composition accurately, they are often expensive and not necessary for most people. Fortunately, there are simpler and more cost-effective ways to estimate body fat percentage and identify where excess fat is stored in the body.

1. Body mass index (BMI): BMI is a quick and commonly used method to estimate body fat based on your height and weight. It helps classify individuals as underweight, normal weight, overweight, or obese. However, BMI does not show where excess fat is stored and cannot distinguish between muscle mass, bone density, and fat. A BMI of <18.5 is considered underweight, 18.5–24.9 is normal, 25–29.9 is overweight, and ≥30 is classified as obese.
2. Waist circumference: This simple method measures abdominal (belly) fat using a non-stretchable measuring tape. The measurement is taken in a standing position, at the end of a normal exhalation, around the abdomen, just above the belly button and below the lower ribs. For adult Indians, a waist circumference of <78 cm for men and <72 cm for women is generally considered normal. Higher values may indicate increased health risk.
3. Waist-hip ratio: This method assesses fat distribution between the upper and lower body. Upper body fat distribution is mostly seen in men and lower body fat distribution is usually seen in women. This is calculated by dividing waist circumference by hip circumference. A higher ratio indicates greater abdominal fat, which is associated with a higher risk of obesity-related health problems. A WHR of ≥1.0 in men and ≥0.85 in women is considered a risk factor.
4. Skinfold (SKF) measurements: This method uses skinfold calipers to measure the fat deposition underneath the skin at specific body sites. Common measurement areas include the thigh, triceps (back of the upper arm), abdomen, area above the hip bone, chest, below the shoulder blade, and armpit. Results can vary depending on the type of calipers used and the skill of the person performing the test. Higher readings generally indicate higher body fat levels.

Apart from these simple methods, more advanced techniques are available to measure body fat more accurately, such as Bioelectrical Impedance Analysis (BIA), DEXA scans, and underwater weighing. However, these methods are typically more expensive and may not be necessary for routine assessment.

Why Losing essential muscle can be harmful?

Muscle is not just something that helps you lift weights, it is one of the body’s most important metabolic organs. It supports various metabolic activities like regulating blood sugar, supports hormone balance, and determines how efficiently your body burns energy at rest.

When you lose muscle, your metabolism slows down. Your body becomes less efficient at handling glucose. Fat regain becomes easier, body strength reduces, and the risk of falling and fracture increases. Low muscle mass is linked to reduced mobility and even increased risk of chronic disease. Weight can always be regained, but muscle is much harder to rebuild. That’s why protecting lean mass should be a priority in any health or weight-management plan.

How to Preserve Muscle Mass During Weight Loss?

It is well known that individuals with obesity usually have greater muscle mass than those with normal weight, but the quality of that muscle is often poor. Although weight loss can reduce muscle mass but does not reduce muscle strength. Studies have been done to explore ways to improve muscle strength and preserve muscle mass during weight loss and suggests that certain strategies should be followed along with a low-calorie diet. These includes performing a resistance and endurance exercises, such as squats, push-ups, pull-ups, and dumbbell training along with ensuring adequate (but not excessive) protein intake. Combining proper nutrition with regular physical activity helps increase and maintain muscle mass, improve strength, and enhance overall physical function in individuals with obesity.

Final Takeaway

Losing weight is necessary for individuals with obesity to improve overall health and reduce the risk of chronic diseases. However, following the right strategy is crucial in achieving this goal effectively and sustainably. Many people focus only on reducing the numbers on the weighing scale, without realizing whether the weight loss is happening in a healthy way.

The goal should not simply be weight reduction, but fat loss while preserving muscle mass. Muscle plays a vital role in maintaining metabolic rate, physical strength, functional capacity, and overall metabolic health. Losing muscle along with fat can slow metabolism, reduce strength, and make long-term weight maintenance more difficult.

A balanced and evidence-based approach of following a calorie-controlled diet, adequate protein intake, and a structured combination of resistance and endurance exercise can help promote fat loss while protecting lean muscle. Because nutritional requirements and exercise capacity vary from person to person, consulting a qualified healthcare or fitness professional is advisable to ensure a safe, personalized, and sustainable plan.

Sources:

1. https://healthcare.utah.edu/healthfeed/2017/01/want-lose-weight-pay-attention-body-composition#:~:text=Body%20composition%20measures%20the%20percentage,A%20Benchmark%20For%20Health
2. DOI: 10.4103/ijmr.IJMR_1777_18
3. https://www.bhf.org.uk/informationsupport/heart-matters-magazine/nutrition/weight/best-way-to-measure-body-fat
4. https://pubmed.ncbi.nlm.nih.gov/28230911/
5. https://pubmed.ncbi.nlm.nih.gov/24457957/
6. DOI: 10.3945/an.116.014506