1 Heart-related lung problems. 2  Chest X-rays can show changes or problems in your lungs that stem from heart problems. 3  For instance, fluid in your lungs (pulmonary edema) can be a result of congestive heart failure.
A new report suggests that itâs generally safe for the average person to consume 400 milligrams of caffeine each a day. More than 90 percent of the worldâs population consumes caffeine in some form on a regular basis. The stimulant drug (yes, it is considered a drug) helps a person stay awake, alert and productive.
Recommended consumption of caffeine is in amounts less than 300mg per day, which is roughly equivalent to 3 - 4 cups of coffee. The maximum amount of caffeine we should consume in a day is 600mg,which would mean 4 - 6 cups of brewed coffee.