What are the reasons why people are not fat and have particularly thick arms

People who are not overweight but have particularly thick arms may be related to local fat accumulation, muscular development, edema, hormonal imbalances, or genetic factors. This situation is usually not related to overall obesity, but rather caused by specific physiological or pathological factors.

1. Local fat accumulation

Even if the overall weight is normal, uneven fat distribution may lead to fat accumulation in the arms. Long term lack of upper limb movement or poor posture can reduce local fat metabolism and form butterfly sleeves. This type of situation requires targeted arm strength training and aerobic exercise, such as dumbbell bending or swimming, to help break down local fat.

2. Muscular development

People who frequently use upper limb muscles, such as fitness enthusiasts or manual laborers, may develop muscular thick arms. Muscle fiber thickening is a physiological change. If accompanied by soreness or stiffness, the training intensity needs to be adjusted and combined with stretching and relaxation.

3. Lymphatic Edema

Lymphatic circulation disorders can lead to fluid retention, manifested as unilateral or bilateral arm swelling. This problem may be caused by lymph node dissection, infection or venous insufficiency after breast cancer surgery. Wearing pressure sleeves and a low salt diet can help alleviate symptoms.

4. Abnormal hormone

hypothyroidism or hypercortisolism will lead to fluid retention and fat redistribution, leading to swelling of the arms. When accompanied by symptoms such as fatigue and fear of cold, thyroid function should be checked, and hormone replacement therapy should be performed if necessary.

5. Genetic constitution

Some populations exhibit body characteristics with a high proportion of upper limb fat or muscle due to genetic influences. If there is no functional impairment, this physiological difference usually does not require intervention, but connective tissue diseases such as Marfan syndrome need to be ruled out.

It is recommended to combine dietary control and exercise to improve arm line, consume sufficient high-quality protein and dietary fiber daily, and reduce high salt and high sugar foods. Perform resistance training for the triceps muscle at least 3 times a week, combined with whole-body exercises such as brisk walking or cycling. If the swelling in the arm continues to worsen or is accompanied by pain and numbness, pathological factors such as kidney disease or nerve compression should be investigated. Avoid keeping the arms hanging down for a long time in daily life, and elevate the upper limbs appropriately during sleep to promote blood circulation.