The body mass index (BMI) is a dimension of human body shape based on that individual’s weight and height.
The BMI is a statistical measurement of height and weight. Although it is a useful way to estimate healthy body weight, it does not measure the percentage of body fat. The BMI can sometimes be misleading – a muscleman may have a high BMI but less fat than an unfit person whose BMI is lower. In general, the BMI dimension can be a useful indicator for the ‘average person’.
The Healthcare professionals often use Body Mass Index (BMI) to determine whether patients are underweight, healthy weight, overweight or clinically obese. The clinically obese people are at larger risk of developing diabetes, stroke, some cancer, and cardiovascular diseases.
What is the standard BMI
BMI less than 18.5 – Underweight
BMI between 18.5 and 25 – Healthy weight
BMI between 25 and 30 – Overweight
BMI between 30 and 40 – Obese
BMI over 40 – Very obese, morbidly obese
What Is Obesity?
Obesity is if that person has accumulated so much body fat and might have a negative effect on their health. If a person’s bodyweight is at least 20% higher than standard
stipulated that should be considered obese. If the Body Mass Index (BMI) is between 25 and 29.9 that considered overweight. If BMI is 30 or over that is considered obesity.
Causes of Obesity
Obesity occurs when a person consumes more calories than they burns. For many people, this boils down to eating too much and exercising too little. But there are other factors that also cause obesity.
Consuming too many calories.
People are eating much more than what is expected. Increased use of sweetened drinks contributes significantly to raise the carbohydrate intake of most young adults over the last three decades. And consumption of fast-foods has tripled over the same period.
Leading a sedentary lifestyle.
With the arrival of electromagnetic appliances like televisions, computers, video games, remote controls, washing machines, and other current convenience devices, the majority of people are leading to sedentary Lifestyle compared to that in older days.
Decades ago for shopping we have to walk down on the road to the street where we have the grocers, banks, etc. Now a day’s a large out-of supermarkets and shopping malls started to appear. People using their feet to driving the cars to get their provisions instead of walking.
The less walk cause of the fewer calories we burn. However Physical activity effects on working of hormones, and hormones have an effect on how body deals with food. Studies have shown that physical activity effects positively on insulin levels – keeping that stable. Unstable insulin levels are associated or lead to weight gain.
Sleep disorder also invites the risk of becoming obesity double; this risk applies to both adults and children as well. This was reviewed results of evidence in over 28,000 children and 15,000 adults. Their evidence clearly indicates sleep disorder can significantly increases the obesity risk in both groups.
Sleep disorder may lead to obesity through increased appetite which results in hormonal changes. Inadequate sleep produces Ghrelin, a hormone responsible to stimulate appetite. Sleep disorder also results to produce less Leptin, a hormone that suppresses appetite.