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Know Your Body Mass Index

Dr. Brian Mirza is a bariatric surgeon Houston patients have trusted for more than 15 years. Certified by the American College of Surgeons, Dr. Mirza is committed to providing advanced weight loss treatments to help patients reclaim their health and quality of life. If you have been considering bariatric surgery and would like to learn more about gastric sleeve, gastric bypass, or Lap Band surgery, please contact us today at 713-339-1353.

Benefits of Body Measurement Services

Body composition measurement is immensely helpful in determining how healthy a body is. The gathered data gives insight into the muscle-fat ratio and leads to more accurate individualized nutritional and exercise plans. These insights can help devise a very precise plan to gain muscle and lose fat in specific areas. Body measurement can help you identify long-term health risks that are specific to your body type and the way you metabolize nutrients. By measuring body density you can gain knowledge about the health of your bones and if you are at risk of osteoporosis. Knowing your body composition and your BMI can help you set clear and actionable goals to lose weight, which can lead to more energy, better sleep, relieve back and joint pain, and boost your confidence.

BMI Calculator

BMI Chart

BMI Classification Health Risk
Under 18.5 Underweight Minimal
18.5 – 24.9 Normal Weight Minimal
25 – 29.9 Overweight Increased
30 – 34.9 Obese High
35 – 39.9 Severely Obese Very High
40 and Over Morbidly Obese Extremely High


Want to Know Your Body Composition?

Benefits: tracking your weight loss and exercise effects on your body.

We are now offering the Seca Machine service.

What Does It Measure?

  • Energy: Resting energy expenditure, physical activity level, and total energy consumption.
  • Fluid: Total body water, and extracellular water.
  • Function & Rehabilitation: Fat-free mass, fat mass, fat mass index, and skeletal muscle mass (right arm, left arm, right leg, left leg, and torso).
  • Development & Growth: Weight, height, and body mass index.
  • Raw Impedance Data: Phase angle, resistance, reactance, visceral adipose tissue, and phase angle.


All weight loss claims are due to surgery and before and after care. Results will vary by person and are based upon the patient, the surgery type and the compliance with the aftercare program. As with any Medical procedure or surgery, there are specific risks and possible complications. If you have specific questions about the procedure we suggest you arrange for a consult with the Doctor.


Schedule Your Visit Today!

First Surgical Hospital

About First Street Hospital

At First Street Hospital we put our patients first, you will have exceptional service in a warm and caring environment.

We are also proud of our phenomenal staff! Our Doctors are board certified and experiences with top ratings. When working with First Street Hospital they love the convenience and the caring environment that we have.

For more information please visit our website at