Waist to hip ratio means the ratio of waist to hip circumference. This ratio can be a sign of personal health and the risk of serious health problems such as diabetes and cardiovascular disease.

Many studies have shown that people who have a waist-to-hip ratio of 0.7 for women and 0.9 for men show greater health and fertility.

According to a study published in the European Heart Journal (2007) waist circumference and waist-to-hip ratio are indicators of the likelihood of cardiovascular issues. Being high can also be a sign of overweight and obesity, which are one of the most important health risks.

The World Health Organization (WHO) has set a waist-to-hip ratio of 0.85 for women and 0.9 for men as a measure of abdominal obesity.