According to the CDC, more than nine percent of adults fall into the category of severe obesity with a Body Mass Index of 40 or above. At just over 300 pounds—a number I crossed in the middle. I'm an expert in obesity, a condition that is rampantly misunderstood. Here is why I'm very comfortable with a patient weighing 300 pounds. As told to Marianne Guenot Short people are towards the bottom, tall people are on the top! BMI is a calculation of height and weight, so you'll see most of these pages marked with a single BMI number, regardless of how much muscle or fat the individuals are carrying. For most people, a weight of 300 pounds is associated with a significantly increased risk for a range of serious health conditions. This is often linked to having a higher Body Mass Index (BMI), which for most people at this weight falls into the severe obesity category. You’re probably asking yourself how someone can get to weigh 300 pounds without stopping, realizing and doing something about it. But that’s the thing about weight. BMI is a measurement of a person's leanness or corpulence based on their height and weight, and is intended to quantify tissue mass. It is widely used as a general indicator of whether a person has a healthy body weight for their height. Please enter a weight between 55 pounds and 1,000 pounds. Please enter a weight between 24.947 kg and 453.592 kg. Body Mass Index is a very simplistic method of determining whether a person is overweight. It does not taken into account a person's frame, gender, or muscularity. Furthermore, at least one study has suggested that slightly overweight people may live longer than people in the normal range. VisualBMI shows you what weight looks like on a human body. Browse weight loss progress pictures submitted on reddit and filter them by height and weight. Explore effective weight loss plans tailored to a 300-pound man. Discover diet and fitness tips to help men achieve their weight loss goals in our guide.