Something that increases the chance of developing a disease
.
Which diseases is obesity a risk factor for?
diabetes
heart attacks
why people have obesity
People who eat a lot of sugary or fatty foods and who don't do much exercise are usually at risk of becoming obese.
This is because body fat develops when an individual's diet provides them with more energy than they use.
Obesity is a non-communicable disease, characterised by large amount of excess body fat.
Two common methods of measuring obesity:
Body mass index (BMI)
Waist-to-hip-ratio(WHR)
BMI= mass(kg)/(height(m))^2
why can muscle make BMI unreliable
For example, muscle tissue has a greater mass than fat tissue, and individuals with lots of muscle often have a high BMI, but are not overweight or obese.
WHR= waist circumference/hip circumference
How does smoking increase lung disease:
Damage bronchitis and alveoli in liver
Can't obtain oxygen
Always inflamed muscular builds up
Smoking increases cardiovascular disease
Damages line of arteries leading to heart
Inhaling carbon monoxide reduces amount of oxygen carried in
