I am not an authority of any kind and am trying to figure out how to solve blood lipid problems myself, especially triglycerides, which have been high much of my life.
TGs were 257 in June 2018, typical. Cardiologist wanted me to take statins, although I’ve tried twice before and suffered acute memory damage. So I took a benchmark test on March 26, 2019 - TG 213.
I did a 5-day fasting mimicking diet and then commenced a tightly measured regime of 5-10% calorie restriction with 50% fat, 30% carb, 20% protein (cronometer.com). I can't tolerate keto. Also, I strictly lowered fructose and more consistently exercised. Two weeks later, on Mar 31 - TG 173.
Next, I bought the examine.com A to Z of supplements doc so I could find the best-rated herbs and supplements for HDL, LDL, and Triglycerides. For triglycerides, the most supported with the most effect are fish oil and spirulina (read examine.com entries, and be aware of side effects - spirulina seems to be anticholinergic? and I had to limit my dose because of prostate effects). The best for HDL and LDL are garlic and krill/astaxanthin. I upped fish oil from one gram to two grams, and added garlic and spirulina. Two weeks later, TG - 130. I'm a 5' 10" male and have dropped from 173 lbs. to 168 over this period as well, and my goal is 161, losing one pound a week.
I wish you good health.