Nothing available can tell you whether you are short of zinc
No measurement is both sensitive and specific enough to place one individual. So nobody can tell you whether you are in the group zinc would help.
What the study found
There is still no reliable test of one person's zinc status
Zinc shortage is among the commonest nutrient deficiencies worldwide, and progress has stalled partly on this: no measurement is both sensitive and specific enough to place an individual. The honest answer to whether zinc will help you is that nobody can say which group you are in.
The caveat · A call to action, no search method
This comes from a narrative review written as a call to action, so it argues a position rather than weighing evidence neutrally, with no stated search strategy or bias assessment. Two of its authors work for an organisation promoting biofortification, one of the solutions the paper recommends. Its own link between zinc and blood sugar or heart risk is described as growing evidence rather than established, and should not be read as settled.