After his shock defeat at Wimbledon, Nadal was diagnosed with Hoffa's syndrome, an inflammation of the fatty tissue in his left knee which has plagued him in recent years.

CNN: Nadal suffers comeback blow

Dr Brorson is experimenting with a variation on the standard liposuction technique, which makes approximately 20 incisions along the affected arm and uses suction to remove the fatty tissue and lymph.

BBC: 'Liposuction' to ease surgery side-effect

Because of time constraints, for all Billy's realistic baby behavior, his creators were unable to capture "the fatty tissue that squishes when a baby moves, " says William Reeves, technical director for Tin Toy.

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For rats on the high-fat diet, the group that ate both types of potato chips gobbled more food, gained more weight, and developed more fatty tissue than the rats that ate only the high-calorie chips.

FORBES: Why Eating Fake Fat Can Make You Real Fat

The autopsy conducted after his death found "extensive contusions of his chest, arms, shoulder and back, " as well as "evidence of crushing of areas of subcutaneous fat" -- which is the fatty tissue directly under a person's skin.

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They lost less fatty tissue.

ECONOMIST: Ageing: Forever young? | The

Though it could not clear cataracts that had already formed, it partly reversed muscle-wasting and fatty-tissue loss.

ECONOMIST: A way to counteract part of the process of growing old

The body tries to wall off the fatty plaques with fibrous scar tissue, but inflamed plaques can produce enzymes that weaken the scar tissue.

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The French scientists looked at 163 non-drinkers who had fatty livers - where fat deposits build up in the organ, potentially leading to formation of fibrous tissue and then to cirrhosis or even liver cancer - to see how many of them had the sleep disorder.

BBC: NEWS | Health | Sleep disorder liver disease link