Methemoglobinemia is a blood disorder in which an abnormal amount of methemoglobin -- a form of hemoglobin -- is produced. Hemoglobin is the protein in red blood cells that carries and distributes oxygen to the body.
Caffeine. One 8-ounce cup of coffee has 95 milligrams of caffeine and a 1-ounce single shot of espresso has 64 milligrams. Consuming too much caffeine can make you restless, anxious and irritable. It can also interact with certain medications. Pregnant women may need to cut back on caffeine consumption.
A single shot of espresso uses approximately 7 to 8 grams of coffee. According to this coffee website, there are approximately 4,000 coffee beans in a pound of coffee. source: Ancora Coffee Roasters-Coffee Glossary. There are 453.59 grams to each pound.