hidden fat in slim body?

it is assumed that people who are slim must be much healtheir than those who are obviously overweight .but scientist have discovered that many outwardly slim people are storing up dangerous layers of fat inside their bodies. their health is often far more at risk than those who are obviously far or obses. a advanced technology ,magnetic resonance imaging ,doctors can look inside the human body in far more detail. and they have found that many slim people carry large amounts of fat around vital organs.it is this fat,rather than the fat found under the ,which can lead to serious health problems.