Fill in the Blanks scientific advances on HealthOnline version complete the sentences by Isabel Parejo 1 preservation labels Diagnostic techniques date transplants Medical expiry purification surgery Medicines water food water Vaccinations surgical Advances in and hygiene have been fundamental in ensuring that people are healthier and have a longer life expectancy . To prevent food spoiling and harming us when we eat it , various techniques are used . Food , as well as telling us the composition of the product , have an date and best - before . The water that reaches our homes has undergone a long process so that you can drink it safely and so that it is not a source of disease . This process is called . advances are another factor that increases people's life expectancy : can discover diseases early . help prevent many diseases . The most common techniques are laser , and implants . have helped to cure or alleviate the symptoms of many diseases .
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