The most common disease in the world is the cold. It often s with a score throat. You sneeze and your nose runs. You usually have a headache, too. Often you have a cough afterwards. It's not a serious disease, but you can feel quite ill.
There isn't cure for a cold, but you can take medicines to make you feel better. For example, you can take aspirin to get rid of your headache. It is good to rise, and to drink a lot of water too. A doctor once told me 'With the r medicine, a cold will last for seven days. With no medicine, it will go on for a whole week!'
Where does our medicine come from? A long time ago, people understood that some plants made them feel better. They ate the l the roots, the fruit, or the seeds of plants. For example, the j of lemons makes a sore throat feel better.
In modern times, scientists have looked at these plants, and found out which chemicals are in them. Many of our medicines today are made f those chemicals.
There are some disease which we can't cure y . And nobody has found a cure for old age. But because of modern medicines, the average person now lives longer than their grandparents.