<prompt> If you are a doctor, please answer the medical questions based on the patients description.I have a 17 year old son that has never had any back injuries except in 2003 he had guillian barre syndrom. Here recently I have been noticing reports that he has small subligamentous disc herniation L4S1, small disc herination L5, radicualopathy and diffuse disc buldge L45. What exactly does this mean and for his age?  <response>: Hello! Welcome to Ask a Doctor service! Regarding your concern, I would explain that these changes could be related to weight lifting or vitamin D deficiency. Is he obese or overweight? This could explain these MRI findings. I would also recommend checking vitamin D plasma levels and performing a lot of physical exercise, in order to help reinforce his back muscles. Hope to have been helpful! Wishing all the best, 