Non-Communicable Diseases

What is Non-Communicable Diseases?

Within Biology, which covers cells, the human body, genetics, evolution, plants and ecosystems: the science of living things, this topic explains Non-Communicable Diseases. Biology topics show how living things work, from the cell up to whole ecosystems, with models you can explore step by step.

Check that you can explain Non-Communicable Diseases in your own words and give one example from everyday life. If you can do that, you have understood the core idea.

Understanding Non-Communicable Diseases helps you explain how living things stay alive and respond to their surroundings, which is central to biology exams.

Non-Communicable Diseases in detail

Non-communicable diseases are not caused by pathogens and cannot be passed from person to person. They include cardiovascular disease, cancer, type 2 diabetes, asthma and some inherited disorders. They are often influenced by lifestyle and genes.

Risk factors include smoking, alcohol, poor diet, lack of exercise and exposure to carcinogens such as UV rays and radiation. Cancer happens when cells divide uncontrollably, forming a tumour, which can be benign (stays in one place) or malignant (invades other tissues). Screening and healthy lifestyles reduce risk, and the combined effect of several factors is often greater.

How the interactive helps you understand Non-Communicable Diseases

Watch the bar chart in the interactive. Use any sliders or buttons it offers to change the values and see how the bar chart responds.

Before you change anything, predict the result. Then change one value at a time and check whether your prediction was right. This is a quick way to build a correct mental model of Non-Communicable Diseases.

Real-life uses and examples

• Structure a longer answer about Non-Communicable Diseases by moving from definition to example to consequence.
• Explain how Non-Communicable Diseases helps a living thing stay alive, using a plant or animal example.
• Connect Non-Communicable Diseases to health, food and medicine in everyday life.

Common mistakes to avoid

• Listing the steps of a process without saying how one step causes the next.
• Using everyday words, such as “energy” or “bad”, without their scientific meaning.
• Learning the definition without testing it. Use the quiz and the interactive to check that you can apply the idea.