I am a 23 year old male w/an enlarged rubbery lymph node in the L neck. I first noticed it months ago &do not believe that it has been growing. Cancer?

Unlikely. You should examine the node every couple of weeks and see a doctor if any of the following happens: It more than doubles in size, additional nodes become enlarged, node becomes painful, it ulcerates through the skin, you have unintended weight loss, you have fever. For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Practice safe sex.