One woman took 180000iu D3 daily and within 3 months her toenail fungus was gone. Toenail fungus is a bear to get rid off. Matter of fact, what she said got me on my D3 kick
Cancer is similar enough to a fungus. In my book your high D3 intake was big factor in getting rid of cancer.
I am not rid of cancer. There is no cure for metastatic prostate cancer; but I believe taking around 18,000 iu of Vitamin D is helping to keep it from progressing.
Are you sure your friend is taking 180,000 iu? That is a toxic level.