Many apparently thin women have a significant amount of fat under the skin or around the internal organs. This is mainly due to their unhealthy lifestyle. In these cases, the amount of fat tissue is much more than muscle tissue. In most cases, seemingly thinner women and men are considered healthier. However, those with more body fat and less muscle mass, regardless of whether their body mass index (BMI) is in the normal range or even below normal, have a higher risk of developing health problems. Some of these are insulin resistance, elevated cholesterol levels, and high blood pressure. In addition to genetic predisposition, there are other reasons that lead to the accumulation of excess fat. This can occur as a result of excessive cardio, sudden reduction of calories in the diet, very rapid weight loss, poor eating habits, presence of type 2 diabetes or hypothyroidism. In general, the presence of body fat is not a serious problem if it is mainly located under the skin and leads to a more rounded appearance of the body. In women who have a large amount of fat but look very thin, fat tissue often builds up around internal organs, such as the liver, pancreas, heart and lungs. As a result, these vital organs cannot perform their functions normally, which can be fatal. The general condition can be improved by a moderate change in lifestyle. It is important not to lose weight suddenly and to follow a balanced diet without fasting periods. Experts recommend keeping simple carbohydrates to a minimum and focusing on getting most of your carbohydrates from whole grains, fruits and vegetables. It is important to include a lot of protein in the diet. Sweet or high-calorie beverages – sodas, alcohol and juices – should be kept to a minimum, as should the consumption of foods with added sugars, sweets, sweetened cereals and candy. In addition to an unhealthy diet and lack of sufficient physical activity, poor sleep and high levels of stress can also lead to an increase in accumulated fat around the internal organs. Sources: https://www.insider.com/guides/health/diet-nutrition/skinny-fat https://www.healthline.com/health/fitness/skinny-fat#lifestyle-changes https://www. womenshealthmag.com/uk/fitness/a35202271/skinny-fat/ https://www.medicalnewstoday.com/articles/skinny-fat