I've been battling high triglycerides for over 5 years now. I'm also diabetic. High triglycerides can lead to pancreatitis, and you DON'T want that. I was in the hospital for one month and home for 3 months with home health care and and IV in my neck with nothing to eat or drink for 4 months! There's no treatment for pancreatitis, except to rest the digestive system, including the pancreas.
Sometimes it's genetic and you can only try to control it with diet and medicine. My last triglyceride reading was almost 700, and it was over 3,000 when I had pancreatitis. My cholesterol reading 4 years ago was 1200!!! So, BE CAREFUL -- it's not fun!
I was just referred to an endocrinologist, and he's changing my medication and I'm watching my diet more carefully. It's not easy, but neither is the alternative! Good luck!