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.
Caffeine is classified by the Food and Drug Administration as âgenerally recognized as safeâ (GRAS). Toxic doses are usually considered anything over 10 grams per day for an adult. To put that into context, one cup of coffee contains 80â175 milligrams of caffeine depending on the bean and preparation method. So someone would need to have roughly 50â100 ordinary cups of coffee to reach a lethal dose and have a true caffeine overdose.