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.
Cup of coffee. If you thought Red Bull was bad, you might be surprised about how much caffeine is really in your favourite drinks. The amount of caffeine the healthy adult should consume a day is up to 400mg and the normal amount in 12-ounce coffee cups contains 90 to 120mg. But one 12-ounce 'tall' or small cup of Starbucks actually has as much as 260mg of caffeine per cup, Business Insider reports.