2. Personalized medical service: through genetic testing, we are reminded which drugs to use with caution, which not only greatly reduces unnecessary medical expenses, improves curative effect, but also avoids causing greater harm to human body;
3. Predictive medicine: it can accurately predict the disease risk in healthy and sub-healthy periods;
4. Disease prevention: disease = internal cause+external cause. Through the understanding of internal causes, the influence of external causes can be effectively avoided, thus reducing the risk of illness.