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
From the outside America may seem to be a land of endless optimism and confidence. But, as Sky News reports, an increasing number of Americans seem to think it is danger of falling apart, and they're preparing for the end. "We're not talking about folks walking around wearing tin foil on their heads,; we're not talking about conspiracy theorists. I'm talking about professionals: doctors and lawyers and law enforcement and military. Normal, everyday people. They can't necessarily put their finger on it. But there's something about the uncertainty of our times. The...
I am tired of hearing people insist that the Fed can expand credit all it wants. Sometimes an analogy clarifies a subject, so let's try one.
It may sound crazy, but suppose the government were to decide that the health of the nation depends upon producing Jaguar automobiles and providing them to as many people as possible. To facilitate that goal, it begins operating Jaguar plants all over the country, subsidizing production with tax money. To...
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I will be keeping posts to a minimum until the New Year. Friday finished with a bit of a high volume flourish, which added a nice gloss to Thursday's big gains.
The Russell 2000 managed to go one step further with a breakout. Watch this index over the coming days; if it can hold the move it will bring other indices with it. The Russell 2000 has under-performed (relatively) all year, and if bulls are to maintain a broader market rally into a sixth year then the Russell 2000 will have to do most of the leg work. As an important side note, the Russell 2000 turned net bullish technically. The flip-side is to watch for a 'bull trap', but even here, this might instead widen the recent trading range handle as major resistance lives at 1,210/15 not at 1,190.
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PSW Members - well, what a year for biotechs! The Biotech Index (IBB) is up a whopping 40%, beating the S&P hands down! The healthcare sector has had a number of high flying IPOs, and beat the Tech Sector in total nubmer of IPOs in the past 12 months. What could go wrong?
Phil has given his Secret Santa Inflation Hedges for 2015, and since I have been trying to keep my head above water between work, PSW, and baseball with my boys...it is time that something is put together for PSW on biotechs in 2015.
Cancer and fibrosis remain two of the hottest areas for VC backed biotechs to invest their monies. A number of companies have gone IPO which have drugs/technologies that fight cancer, includin...
Stocks have needed a reason to take a breather and pull back in this long-standing ultra-bullish climate, with strong economic data and seasonality providing impressive tailwinds -- and plummeting oil prices certainly have given it to them. But this minor pullback was fully expected and indeed desirable for market health. The future remains bright for the U.S. economy and corporate profits despite the collapse in oil, and now the overbought technical condition has been relieved. While most sectors are gathering fundamental support and our sector rotation model remains bullish, the Energy sector looks fundamentally weak and continues to ran...
Stocks got off to a rocky start on the first trading day in December, with the S&P 500 Index slipping just below 2050 on Monday. Based on one large bullish SPX options trade executed on Wednesday, however, such price action is not likely to break the trend of strong gains observed in the benchmark index since mid-October. It looks like one options market participant purchased 25,000 of the 31Dec’14 2105/2115 call spreads at a net premium of $2.70 each. The trade cost $6.75mm to put on, and represents the maximum potential loss on the position should the 2105 calls expire worthless at the end of December. The call spread could reap profits of as much as $7.30 per spread, or $18.25mm, in the event that the SPX ends the year above 2115. The index would need to rally 2.0% over the current level...
I officially bought 250 shares of EZCH at $18.76 and sold 300 shares of IGT at $17.09 in Market Shadows' Virtual Portfolio yesterday (Fri. 11-21).
Click here for Thursday's post where I was thinking about buying EZCH. After further reading, I decided to add it to the virtual portfolio and to sell IGT and several other stocks, which we'll be saying goodbye to next week.
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.
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