Very high triglycerides can be caused by poor diet and not enough exercise. You may also have inherited very high triglycerides from a parent. Your doctor will tell you how to manage your triglycerides. If your weight is higher than what is considered healthy, losing even 5 pounds may help lower your triglycerides.
WORD likes it un-hyphenated but I don't. Long-term should be hyphenated but longtime should not be hyphenated, at least until a few more decades pass and the grammatical rules for the use of hyphens either relax or fade away. Here is part of an erudite commentary on this subject:
(She has a part-time job. She attends school part time.). percent: Always spell out percent in text and use figures (4 percent). Percent takes a singular verb if used alone (a 10 percent return is good) or if a singular word is the object of of (exactly 78 percent of the product is needed).on- (prefix): In general, words with a non-prefix are not hyphenated (nonstate, nonresident, nongovernmental) unless confusion in reading might result (as with non-native). A hyphen is used before a proper noun (non-English).