Waist to hip ratio

The waist-to-hip ratio is a measure of abdominal obesity. Excess body fat in the abdominal area has been closely linked to an increased risk for diabetes, cardiovascular disease and stroke. To get your waist-to-hip ratio, measure your waist at its narrowest point and divide by the number you get on measuring your hips at their widest point.
If the waist-to-hip ratio is .85 or higher for women, they need to lose weight. and for men if the waist-to-hip ratio is 1.0 or higher, they need to lose weight.
For example: A male body's waist measures 40 inches and hips measure 38 inches. Then
Waist-to-Hip Ratio is 40/38 = 1.05
1.05 is higher than 1.0 - he should lose some weight.
The waist and hip measurement difference should not be more than 0.9 Inches in both male and female. If this difference is less than 0.9 Inches in female, that too was an alarming sign for their health. The normal waist line in male should not measure more than 40 inches, while in female it should be 36 inches. The hip-line thus could be either 39.1 Or 40.9 Inches in male, and 35.1 Or 36.9 Inches in female. The waist to hip ratio can also affect the blood pressure and cause heart ailments, if obesity is not controlled. Regular exercise and fat free dietary habits could maintain the desired waist to hip ratio.

Here we are providing some information regarding body parts sizes.

Size of Head

Bigger heads contain bigger brains and this relieves you of Alzheimer's disease.
Measurements:
For Women - Avg. head size is 21 to 22.5 inches.
For Men - Avg. head size is 22 to 23 inches.

Neck

A think neck can indicate serious snoring or sleep apnoea - where breathing temporarily stops due to reduced airway in the throat.
Measurements
For Women - 16 inch
For Men - 17 inch.
People with greater neck measurements than mentioned are at greater risk of blood pressure and heart related problems.

Waist

Large waist may increase the risk of heart problems and blood circulation. Researches have found out that large waists are linked to heart problems.
Measurements:
For Women - Waist size should not exceed 32 inches.
For Men - Waist size should not exceed 37 inches.
You are at greater risk of high blood pressure and cholesterol levels due to increased waist sizes.

Pelvis

Pelvis size is crucial in childbirth as it has to be big enough for the baby to come out. Women with narrow pelvises could need a Caesarean section.
Measurements:
Lie down and measure the distance between the two hip bones that jut out. An average pelvis is 11 to 12 inches.