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.
While caffeine in moderation is considered safe for teenagers, as little as 100 milligrams of caffeine per day can lead to dependency. A dependency can result in withdrawal symptoms if your body is not supplied with the caffeine it has become used to receiving. Your personal sensitivities toward caffeine should determine if 100 milligrams per day is safe or too much.