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.
Is it bad for us or not? How much is too much? And how, exactly, does caffeine interfere with sleep? In terms of how much caffeine you should have, the general consensus is that up to 500 milligrams per dayâor roughly the equivalent of four eight-ounce cups of brewed coffeeâis safe for adults. Children, on the other hand, should have no more than 100 milligrams of caffeine a day. Drinking more than the recommended amount of caffeine per day can cause adverse side effects, many of which interfere with proper sleep cycles.