In short, you can't test your own blood so you don't know when your levels may be low. If there were no downsides to constantly supplementing then what reasons may there be to not do this?
That is I think the actual question.
> There's a large amount of precedence, that's why. Rather than asking the room, one would think the first step would be to obtain information and inform yourself.
https://news.ycombinator.com/item?id=36930036
I don't know why this person feels the need to roam around the conversation policing how people are engaging in it. It's incredibly obnoxious. Especially frustrating given that they do seem to have some information to share, which they could do and just omit the completely gratuitous and unwarranted hostility.
For what it is worth, my context is that I have seen the behavior of asking the room, or even just throwing out conjecture to the room, without properly doing research beforehand, to be a common flaw within computer scientists and within "tech workers" as a demographic. I had to put up for a whole year with one person making up what was complete and absolute nonsense through first principle reasoning, rather than just reading a 101 Sociology book, which would have answered all his questions effectively and with some basis in research. It is also something I see commonly within the Hacker News comments -- someone will ask a generic question to people in Hacker News, rather than doing even a cursory form of searching first. I do not understand the idea implied through this behaviour, that a random tech worker will know more than people whose job is to study the questions that are being asked, and so I resolved to ask this person, taking care to be polite, why they choose to engage in this behaviour.
If what you consider “polite”, several people call out as aggressive, then maybe you should re-evaluate your definition of the word.
Your comment does not read polite. At best, passive aggressive.
Asking questions fosters discussion. For a site centered around discussion, that seems warranted. Telling people to just look it up is pretty much the antithesis of discussion.
On the contrary, the quality of discussion would be much higher if people took one entire minute beforehand to research something. It is shameful and disappointing that the techbros here cannot be bothered to do this, and prefer to live in ignorance.
While you are right there may be individual variation, the rule of medical advice is that we cannot assume what we do not know, and preventative ingesting of a substance that is not too well understood may have unintended side-effects. Especially in the case of molecules that have been synthesized.
As my other comment within this thread states, there is a high precedence for contamination of health supplements as a whole, so in this instance preventative dosing would seem to put someone at more risk than e.g. just eating more protein.
In addition, the supplements may contain vastly higher quantities than are safe to absorb. For example, there was a recent pubmed paper describing an incident where +500mg doses of Vitamin C (which is 1/6th of the EFSA and NIH's estimates of "safe upper limit") taken daily over a long time caused kidney stone formation. This required expensive surgery to correct.
For what it is worth, as someone with a damaged and resectioned gastrointestinal tract -- the dieticians I work with prefer to solve deficiencies with eating foods that contain the given micronutrients rather than supplementing with them. One doctor told me I had a copper deficiency, he told me that taking copper supplements tends to cause gastrointestinal distress and would have been too high a correctional dose, and so his solution was to increase my consumption of dust (which is how we naturally get copper) through obeying the five second rule. This wasn't especially out of the norm. Selenium deficiencies were solved by eating tinned tuna, likewise vitamin B12 deficiencies were solved by ingesting liver occasionally, etc.
If you suspect that you are deficient in a given micronutrient, it is always better to explore that possibility with your doctor than to take high quantities of unreliably tested substances.