As far as I know penis length is not correlated with body height, hand size, etc. because those all relate to skeleton size, but penises have no bones.
Scientific measurement is done from the top by pressing against the pubic bone since belly fat makes the penis look shorter.
Also, it's a much noiser data-set, especially since puberty seems to be starting earlier.
You can kind of get by if you ensure you're population is all pre-pubescent or all post-pubescent and similar in age. But anything in between is a mess of confounders.
They don't detail the sources of the studies, but I imagine the vast majority to be self-reported, which is enough to explain this supposed increase: it didn't increase, but having a big dick has become more and more the basic brag as internet developed.
> The initial search yielded 12,531 articles (PubMed: 1,975; Cochrane: 3,435; and Embase: 7,121). Duplicate articles appearing in multiple databases were excluded (n=8,022). After abstract screening, 7,850 papers were excluded. Of the remaining 172 papers, 97 were further excluded as they either did not report penis measurements (n=63), reported measurements after major pelvic surgeries (n=12), or *reported self-measurements (n=22).*
>In a study published Feb. 14 in The World Journal of Men's Health, Eisenberg and his colleagues compiled data from 75 studies, conducted between 1942 and 2021, that reported on the penile length of 55,761 men. The team found that the average erect penis length increased by 24% over 29 years, a trend they saw around the world.
you think that this many men over that period had complexes?
Extra length is required to get past the extra padding on both sides, so only longer members will successfully reproduce without mechanical assistance in the Buy N Large future.
Flagged comment which I think raises a mildly interesting question. If resurrecting a flagged comment is against the rules, then kill this, too.
Why are men so obsessed with penises and their size?
Are they actually? Or maybe even one step further back, what does being obsessed with penises and their size entail? I don't think it is surprising that during puberty people care about the changes happening to their bodies and wonder if everything is normal, but later on in life? Maybe if you ended up on the short side and consider this a flaw that must be hidden or remedied. But in general? It surely is a stereotype but I tend towards it being just a stereotype.
Up to a point it's along the same lines as "why are men so obsessed with football", because it's big, in your face and requires no thinking or interpretation. And to comment on my own brand new account, I wanted to comment on something else but chanced upon this :) Reproductively it probably meant nothing at all in the life-long marriage context, but in the on-off, one night society of ours it might well be an advantage. Also, we know quite well it's not really much of a pleasure or love predictor, but it's anecdotally at least a non-monogamy predictor, both owners and recipients are likely to include such adventures in their bucket lists!
Measurement is the first step that leads to control and eventually to improvement. If you can't measure something, you can't understand it. If you can't understand it, you can't control it. If you can't control it, you can't improve it.
Furthermore, what is the scientifically accepted bodily datum from which to measure length?