She said: “Scarring of fat tissue may make weight loss more difficult."
Although such people can appear relatively slim, fat can be deposited in their abdomen and in their internal organs, including their liver, pancreas, muscle and the heart.
Fat can also be stored around and in the arteries causing arteriosclerosis, a stiffening of arteries predisposing people to high blood pressure, heart disease and strokes. Scarring of fat tissue has also been linked to diabetes.
Dr Kos said: “One could have very little fat below the skin and still be at risk of diabetes due to a lot of fat within the abdomen and inner organs."
Source : https://www.express.co.uk/life-style/health/903335/Obesity-weight-loss-fat-cell-scaring-strokes-high-blood-pressure-heart-disease