Beauty Of science

Why we should keep healthy shape?

Obesity is not just dangerous to your self-esteem, More importantly, It can endanger you health and lifespan, too.

According to scientists, Obesity can weaken your body's immune system and reduce its ability to fight off infections.

What's more, obese people have:

• 40% more risk of dying of heart disease.
• 60%-120% higher risk of dying of diabetes and kidney failure.
• 10% more risk of fatal cancer.
• 20% more risk of failed lungs.
  

Table: Estimated Calorie Requirements (in Kilocalories)

		Activity Level
Gender	Age (years)	Sedentary	Moderately Active	Active
Female	19-30 31-50 51+	2,000 1,800 1,600	2,000-2,200 2,000 1,800	2,400 2,200 2,000-2,200
Male	19-30 31-50 51+	2,400 2,200 2,000	2,600-2,800 2,400-2,600 2,200-2,400	3,000 2,800-3,000 2,400-2,800

Sources: U.S. Department of Health & Human Services and U.S. Department of Agriculture

What cause obesity?

Obesity occurs over time when you take in more calories than you use. Your body stores these excess calories as fat. Obesity tends to run in families. Unhealthy eating habits and inactive lifestyle also contribute to obesity.

Obesity in Figures

The World Health Organization (WHO) predicts that there will be about 2.3 billion overweight and 700 million obese adults by 2015. At least 20 million children under the age of 5 years were overweight globally in 2005.

Dangers of Obesity

Obesity has its daily inconveniences: difficulty in walking, finding clothes that fit, and spilling over bus andplane seats. What's more, severe obesity in the 40 to 45 BMI range cuts lifespans by eight to 10 years.