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:
Ex. congressman, sales people. â Units of measurement are usually separated with a hyphen. Ex. light-year, kilowatt-hour. Compounding an Adjective and a Noun-In most cases an adjective and noun are written as two separate words. Ex. minor league, genetic code. However, if the two words are short and the first word is stressed, they may be written as one word or hyphenated.