Researchers have been looking at how people who look on the bright side of things may have better health and live longer lives. Optimists who see the glass as half full, rather than half empty, have been shown to reap the benefits when it comes to things like lower blood pressure, fewer cases of heart disease, better weight control, and even healthier levels of blood sugar. However, staying positive has also been shown to have a positive impact on serious illnesses like cancer and HIV infection.

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