Re: Aeropress reviewed...

| This first link was a Science News article which references the
| following peer reviewed studies:

Which - if you see my comments interposed - you don't seem to have even
glanced at.

| Barrett-Connor, E., J.C. Chang, and S.L. Edelstein. 1994.
| Coffee-associated osteoporosis offset by daily milk consumption.
| Journal of the American Medical Association 271(Jan. 26):280.

This has absolutely positively nothing nada to do with cholesterol (and
smart money says that the cohort - 980 postmenopausal women aged 50 to 98
years in Rancho Bernardo, Calif. - were probably drinking mainly filtered
coffee or instant, not French Press or espresso).

Did you read any of these papers? I don't think so - I'm sitting here
looking at them, and they don't say what you think they do.

| Urgert, R., et al. 1996. Comparison of effect of cafeti?re and
| filtered coffee on serum concentrations of liver aminotransferases and
| lipids: Six month randomized controlled trial. British Medical Journal
| 313(Nov. 30):8.

Comment about this paper in BMJ. 1997 Mar 1;314(7081):680 by M.I. Gurr:
"Cholesterol concentration may have been within natural fluctuations."

| Urgert, R., et al. 1995. Levels of the cholesterol-elevating diterpenes
| cafestol and kahweol in various coffee brews. Journal of Agricultural
| and Food Chemistry 43(August):2167.

Not a study of medical effects, only of terpenoid levels in the different
kinds of coffee. Completely irrelevant to the argument.

| Salvaggio, A., et al. 1991. Coffee and cholesterol, an Italian study.
| American Journal of Epidemiology 134:149.

Retrospective/data mining. I think it is worth pointing out that even
though Italians drink mainly unfiltered coffee (moka and espresso), they
have statistically lower serum cholesterol than the Americans and Germans
who drink mainly filtered coffee.

| Superko, H.R., et al. 1991. Caffeinated and decaffeinated coffee
| effects on plasma lipoprotein cholesterol, apolipoproteins, and lipase
| activity: A controlled, randomized trial. American Journal of Clinical
| Nutrition 54:599.

This is one of the interesting studies that suggest that decaf is worse for
you than caffeinated coffee, but has no none nada comparison between
filtered and unfiltered, moreover they concluded that "discontinuation of
caffeinated coffee revealed no change [in plasma LDL cholesterol and
apolipoprotein B]" - ie, this study's conclusion is *against* your point.

You really should be *reading* these papers before basing assertions on
them.

| van Rooij, J., et al. 1995. A placebo-controlled parallel study of the
| effect of two types of coffee oil on serum lipids and transaminases:
| Identification of chemical substances involved in the
| cholesterol-raising effect of coffee. American Journal of Clinical
| Nutrition 61(June):1277.

This is a study on the effects of Arabica oil (extract from green beans) and
Robusta oil on TC; the former had a tiny impact, the latter statistically
none, since neither oil was from either filtered *or* unfiltered coffee, it
is hard to interpret this as support for your claim. (This study was
explicitly rejected for inclusion from the Jee metanalysis for this reason.)

Plus, a study by Mensink et al, J Intern Med. 1995 Jun;237(6):543-50 had
directly opposite conclusions (ie, same effect from Robusta and Arabica
oil).

| Zock, P.L., et al. 1990. Effect of a lipid-rich fraction from boiled
| coffee on serum cholesterol. The Lancet 335(May 26):1235.

None of these subjects consumed any coffee at all!

This one was explicitly rejected by the Jee metanalysis for inclusion
because of "a lack of a concurrent control group"

| Furthermore, every single report of the dozens that I referred to in my
| prior posts (which I found with the help of google) were peer reviewed
| published reports by respected institutions in respected scientific and
| medical journals.

There are certanly many many articles in the literature on coffee and
health. Most have nothing at all to say about unfiltered vs unfiltered
coffee.

See, to understand what is going on, you have to *read* the papers, or at
least the technical abstracts, then look at the ensuing discussions of these
papers by other professionals (usually in the same journals), pair up the
conflicting studies and try to evaluate the relative significance, and
generally treat the professional literature as an ongoing dialogue evolving
over time.

If you don't want to do that, that's fine - it isn't your job, there are
people who do this for a living (and I don't mean science journalists).
However, to simply enumerate a bunch of journal article titles culled from
Google or even the endnotes of an article in a popular science magazine is
certainly not scientific research, and not a very effective form of
scientific advocacy.

Anyway, I'm done with this - the judging of scientific research is something
I generally try to leave back at the office, I come onto this newsgroup to
escape all that and focus on what is the real subject of alt.coffee, namely
comercial-grade espresso equipment.

- David R.
--
Less information than you ever thought possible:
http://www.demitasse.net
.

Relevant Pages

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