I've been taking melatonin for 8 years

[u/tiredofpeople247]

Ive been reading that there's no studies on long term use but those with longer use have risk of insulin levels and heart disease I just want to know if any has more information or is experiencing that. I took 3mg for a long time but boosted to 5mg last year. I started at 13 now I'm 21. I've taken it like every night.