Everyone agrees that the number of cavities have plummeted in the U.S. over the last couple of decades, after water fluoridation was introduced (that is why health officials call water fluoridation "one of the ten greatest public health accomplishments of the last century").
That proves that water fluoridation fights cavities, right?
It would, of course, if the cavity levels have not also plummeted in countries which do notfluoridate their water.
Let’s take a look at the scientific literature to get an unvarnished picture on the trends.
Cavity Levels Have Only Plummeted In the U.S. And Other Countries Which Fluoridate Water, Right?
The decline in caries [the scientific term for "cavities"] prevalence in communities without fluoridated water in various countries is well documented. The cause or causes are, at this time, a matter of speculation.
The Journal of Public Health Dentistrynoted in 1985:
Even the most cursory review of the dental literature since 1978 reveals a wealth of data documenting a secular, or long term, generalized decline in dental caries throughout the Western, industrialized world. Reports indicate that this decline has occurred in both fluoridated and fluoride-deficient areas, and in the presence and absence of organized preventive programs.
The prestigious science journal Naturenoted in 1986:
[D]uring the period 1979-81, especially in western Europe where there is little fluoridation, a number of dental examinations were made and compared with surveys carried out a decade or so before. It soon became clear that large reductions in caries had been occurring in unfluoridated areas. The magnitudes of these reductions are generally comparable with those observed in fluoridated areas over similar periods of time
The Journal of the American Dental Association noted in 1988:
The current reported decline in caries tooth decay in the US and other Western industrialized countries has been observed in both fluoridated and nonfluoridated communities, with percentage reductions in each community apparently about the same
This is a non-trading topic, but I wanted to post it during trading hours so as many eyes can see it as possible. Feel free to contact me directly at firstname.lastname@example.org with any questions.
Last fall there was some discussion on the PSW board regarding setting up a YouCaring donation page for a PSW member, Shadowfax. Since then, we have been looking into ways to help get him additional medical services and to pay down his medical debts. After following those leads, we are ready to move ahead with the YouCaring site. (Link is posted below.) Any help you can give will be greatly appreciated; not only to help aid in his medical bill debt, but to also show what a great community this group is.
The S&P 500 oscillated a bit during its opening hour, hitting its -0.23% intraday low in the first 30 minutes of trading. The index then rose in a couple of waves to its 0.71% closing gain, fractionally off its 0.74% intraday high. This was a big week for the 500, surging 4.12% and nearly erasing its October loss, which now stands at -0.39%. It is now only 2.33% from its record close on September 18th.
The yield on the 10-year Note closed at 2.29%, unchanged from yesterday's close and up 7 bps from last Friday's close.
Here is a 15-minute chart of the week.
On the daily chart below we see that volume was relatively light -- the first daily gain with volume below its 50-day moving average since September 26th. Today's closing price is just a hair below its 50-day day moving average.
If you're following Valeant's proposed takeover (or merger) of Allergan and the lawsuit by Allergan against Valeant and notorious hedge fund manager William Ackman, for insider trading this is a must-read article.
Linette Lopez describes the roles played by key Wall Street hedge fund owners--Jim Chanos, John Paulson, and Mason Morfit, a major shareholder in Valeant. Linette goes through the con...
There is lots of action in Southwest Airlines Co. November expiry call options today ahead of the air carrier’s third-quarter earnings report prior to the opening bell on Thursday. Among the large block trades initiated throughout the trading session, there appears to be at least one options market participant establishing a call spread in far out of the money options. It looks like the trader purchased a 4,000-lot Nov 37/39 call spread at a net premium of $0.40 apiece. The trade makes money if shares in Southwest rally 9.0% over the current price of $34.32 to exceed the effective breakeven point at $37.40, with maximum potential profits of $1.60 per contract available in the event that shares jump more than 13% to $39.00 by expiration. In September, the stock tou...
Last week brought even more stock market weakness and volatility as the selloff became self-perpetuating, with nobody mid-day on Wednesday wanting to be the last guy left holding equities. Hedge funds and other weak holders exacerbated the situation. But the extreme volatility and panic selling finally led some bulls (along with many corporate insiders) to summon a little backbone and buy into weakness, and the market finished the week on a high note, with continued momentum likely into the first part of this week.
Despite concerns about global economic growth and a persistent lack of inflation, especially given all the global quantitative easing, fundamentals for U.S. stocks still look good, and I believe this overdue correction ultimately will shape up to be a great buying opportunity -- i.e., th...
Now that bitcoin has subsided from speculative bubble to functioning currency (see the price chart below), it’s safe for non-speculators to explore the whole “cryptocurrency” thing. So…is bitcoin or one of its growing list of competitors a useful addition to the average person’s array of bank accounts and credit cards — or is it a replacement for most of those things? And how does one make this transition?
With his usual excellent timing, London-based financial writer/actor/stand-up comic Dominic Frisby has just released Bitcoin: The Future of Money? in which he explains all this in terms most readers will have no tr...
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Well PSW Subscribers....I am still here, barely. From my last post a few months ago to now, nothing has changed much, but there are a few bargins out there that as investors, should be put on the watch list (again) and if so desired....buy a small amount.
First, the media is on a tear against biotechs/pharma, ripping companies for their drug prices. Gilead's HepC drug, Sovaldi, is priced at $84K for the 12-week treatment. Pundits were screaming bloody murder that it was a total rip off, but when one investigates the other drugs out there, and the consequences of not taking Sovaldi vs. another drug combinations, then things become clearer. For instance, Olysio (JNJ) is about $66,000 for a 12-week treatment, but is approved for fewer types of patients AND...
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