Monitor your average blood sugar over a three-month period via an A1c test. The results shown on an A1c chart indicate normal blood sugar under 5.7%; higher numbers indicate prediabetes or diabetes.

Normal blood oxygen saturation levels are 95% to 100%. Most people should have a blood oxygen level of at least 92%. If your blood oxygen level drops below 90%, it can be dangerous and requires ...

Total cholesterol levels of 125-200 mg/dL are optimal for heart health. Genetics, diet, activity levels, smoking, and excessive drinking can affect your cholesterol levels. Regular exercise and a ...

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

William Blair's Richard de Chazal says the earnings picture is returning to normal. He plotted the progression of earnings estimates this year vs. the previous two years. As the chart shows, there was ...

Add Yahoo as a preferred source to see more of our stories on Google. Checking your blood pressure at home or a local pharmacy can be an effective way to stay proactive about your heart health.

Stella Osoba is the Senior Editor of trading and investing at Investopedia. She co-founded and chaired Women in Technical Analysis. She has 15+ years of experience as a financial writer and technical ...

Normal blood sugar levels are about 70-100 mg/dL. Your blood sugar will naturally fluctuate a bit throughout the day in response to food and other factors. However, it ideally stays within a set range ...