Loose flesh may be caused by protein deficiency, reduced skin resilience, excessive fat loss, and other reasons. Here are some possible explanations:

1. Protein Deficiency

Severe protein deficiency can lead to skin laxity and lack of elasticity. If the body lacks sufficient protein, the skin may become loose and saggy.

2. Decreased Skin Resilience

Body fat and muscle provide significant resilience to the skin. However, various factors such as aging, weight loss, unbalanced nutrition, and lack of exercise can lead to fat loss and muscle weakness, causing the skin to lose support and sag.

3. Excessive Fat Loss

Rapid weight loss or illness-induced emaciation can cause the skin to lose support and sag. Vitamin C can protect cells from UV damage and neutralize free radicals, helping to produce collagen and improve facial wrinkles and sagging.

Improving Skin Resilience

By injecting, ingesting, or applying moisturizers that contain collagen, it can significantly improve the skin's support ability. Additionally, over 90% of premature skin aging is caused by excessive sun exposure, so sun protection can also help improve loose flesh to a certain extent.

Dietary Recommendations

It is recommended to maintain a balanced diet and consume flavonoid-rich vegetables and fruits such as carrots, tomatoes, and grapes. Drinking red wine and tea can also help maintain collagen levels in the skin. Avoid high-fat foods to prevent the formation of free radicals and accelerate aging.