What are the causes of super skinny people?

Genetics: Some people are simply born with a faster metabolism or smaller body frame, which makes it easier for them to stay thin.

Medical conditions: Certain medical conditions, such as hyperthyroidism, diabetes, and malabsorption syndromes, can cause weight loss and difficulty gaining weight.

Eating disorders: Eating disorders, such as anorexia nervosa and bulimia nervosa, can lead to extreme weight loss and malnutrition.

Certain medications: Some medications, such as chemotherapy drugs and antidepressants, can cause weight loss as a side effect.

Stress: Chronic stress can lead to the release of hormones that slow down metabolism and make it harder to lose weight.

Aging: As people age, they may lose muscle mass and gain weight more easily, but some people may experience the opposite and lose weight instead.

It's important to note that not all skinny people are unhealthy. Some people may be naturally thin and have no health problems, while others may be underweight due to an underlying medical condition. If you are concerned about your weight, it's always a good idea to talk to your doctor.