does Saw palmetto really cause heart disease?

Bitboy asked:

i know the side effect of Saw palmetto is abnormal heart beat. but can it really cause heart disease?
i just tested my heart beat, 75 in a minute. is that normal?
because i plan to get some hair loss product. and the main ingredient of the supplement is Saw palmetto. so i just wanna know before i take those stuff.

Rachel

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