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.
And since Starbucks' menu is rapidly expanding, we put together this handy chart to help you keep track of how much caffeine is in every Grande-sized Starbucks drink. When you're looking at it, keep in mind that the Mayo Clinic says 400mgs of caffeine per day is safe.