This body weight is regulated by a feedback control mechanism from the periphery to the brain and the central controller is located in the hypothalamus( 4 ✔ ✔Trusted Source
Set Point theory proposes that each of us are uniquely wired and our body strives to maintain a certain ideal weight. Waist circumference as a vital sign in clinical practice: a Consensus Statement from the IAS and ICCR Working Group on Visceral Obesity A waist circumference of 40 inches or more for men and 35 inches or more for women is associated with an increased risk of heart disease and type 2 diabetes( 3 ✔ ✔Trusted Source In some cases waist circumference can be a better indicator of health risk than BMI. A person with higher muscle mass may weigh more than someone with more fat percentage and hence be healthier. Interestingly a pound of muscle takes up less space than a pound of fat, and muscles also burns more calories. Healthy Weight is linked to longevity and means reduced risk of chronic diseases, such as heart disease, type 2 diabetes, and certain cancers. All of the trace elements such as iron, zinc, copper and selenium make up less than 10 grams of the human body. Almost 99% of the body mass of the human body is made up of six elements namely oxygen, carbon, hydrogen, nitrogen, calcium and phosphorus. There are 60 identifiable chemical elements present in the human body and of these only around 25 are required for life and good health. The elements in the human body are distributed as water, carbohydrates, fats, protein, hydroxyl-apatite (in bones) along with minerals and DNA. Females have more fat which also means they have higher proportion of carbon. Water is responsible for 60 to 65% of body weight among males and 50% among females. 
There are more bacteria that reside in normal human gastrointestinal tract than cells in the body.On an average 70kg or 150lb mass of an adult human body contains approximately 37.2 trillion cells.
Growth in men occurs till the age of 25, after which the weight normally remains constant.Nevertheless, here are some fifteen interesting facts about our body weight and health: Interesting Facts about Ideal Body WeightIdeal body weight depends on various factors, including a person's body composition, muscle-to-fat ratio, age, sex, and bone density.
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