The yellow tissue you see in MRI scans is fat — and it’s one of the most telling indicators of how the body functions under different conditions.
In medical imaging, the contrast is striking. In the MRI of an obese individual, the white or yellow areas of fat fill the abdominal cavity, pressing upward against the liver (often shown in orange). This pressure forces the liver against the diaphragm, which in turn crowds the right lung — the black space you see in the image.
This simple shift explains why obesity can make breathing more difficult. The lungs have less room to expand, oxygen levels drop, and fatigue sets in more easily. What might look like “just extra weight” on the outside is, internally, a complex rearrangement of organs competing for space.
The images also remind us that fat isn’t just an aesthetic concern — it’s an active tissue that affects how our organs function. A healthy balance of fat is essential, but too much of it, especially around internal organs, becomes a physical and metabolic burden.
As the author who selected these MRI images once noted: when documenting science, honesty matters more than data perfection. You don’t make up what you can’t verify — and you let the image speak for itself.
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