From the nutritional viewpoint, sea cucumber is an ideal tonic food. It is higher in protein (at 55%) than most any other food except egg whites (at 99%) and it has 10-16% mucopolysaccharides, substances that are used to build the cartilage. Sea cucumber is lower in fat than most other foods.

According to analysis by principles of Traditional Chinese Medicine (TCM), the sea cucumber nourishes the blood and vital essence (jing), tonifies kidney qi (treats disorders of the kidney system, including reproductive organs), and moistens dryness (especially of the intestines). It has a salty quality and warming nature. 

Common medicinal uses of sea cucumber in TCM include treating:

  • Anti-Aging
    Collagen, arginine, chondroitin sulfate,lin,selenium,nicotinic acid and silicon in sea cucumber are effective for fatigue recovery, anti-aging and aesthetic function. In addition, arginine encourages regeneration of human cells and body damage recovery.
  • Anti-Cancer
    Japanese / Korean sea cucumbers are reputed for anti-cancer properties. Acid mucopolysaccharide in the sea cucumbers are known to be effective in controlling body physiological function and preventing cancer cells.
  • Weakness and Impotence:
    Arginine in sea cucumber is known to be effective in treating sexual impotence, frequent urination, and other signs of kidney deficiency and renal dysfunction. Sea cumber also contains minerals such as zinc, lin, manganese, selenium and nickel that improve men’s sperm cells.
  • Improvement of insomnia, memory enhancement
    Sea cucumber is effective for improvement in insomnia and memory. Sea cucumber contains the highest level of arginine as compared to other food. Arginine is known for brain fatigue recovery and play an important role in improving memory.
  • Improvement in osteoarthritis
    Sea cucumber, having a cartilaginous body, serves as a rich source of mucopolysaccharides, mainly chondroitin sulphate, which is well-known for its ability to reduce arthritis pain, especially that of osteoarthritis
  • Healing
    Sea cucumbers is known in TCM to promote healing and recovery especially after surgery and delivery of baby.

Disclaimers:
The above serves only as dietary guidance and not health claims. At this point in time there is insufficient conclusive evidence to support the above health benefits.

References:
http://www.foxnews.com/health/2015/02/03/sea-cucumber-miracle-cancer-treatment.html
http://www.itmonline.org/arts/seacucumber.htm
http://healthyeating.sfgate.com/benefits-sea-cucumber-5710.html