Wednesday, November 21, 2012
Thursday, April 7, 2011
Today is World Health Day!!
Promoting awareness about antibiotic resistance is the agenda for this year. From my side, I don't prescribe antibiotics unnecessarily and ensure that my friends and patients complete the course of antibiotics whenever prescribed.
Saturday, March 26, 2011
Friday, January 15, 2010
Tuesday, December 22, 2009
Masking products such as mouthrinses/mouthwashes are not, and antimicrobial ingredients in oral healthcare products are only temporary effective in reducing micro-organisms or their substrates.
Good short-term results were reported with chlorhexidine. Triclosan seems less effective, essential oils and cetylpyridinium chloride are only effective up to 2 or 3 h. Metal ions and oxidizing agents, such as hydrogen peroxide, chlorine dioxide and iminium are active in neutralizing volatile sulphur-containing compounds. Zinc seems to be an effective safe metal at concentrations of at least 1%.
The effectiveness of active ingredients in oral healthcare products is dependent on their concentration and above a certain concentration the ingredients can have unpleasant side effects. (1)
Antimicrobial mouthrinses are generally considered safe and effective in reducing plaque and gingivitis, and should be part of a comprehensive oral health care regimen that includes brushing, flossing and rinsing to prevent or minimize periodontal disease. (2)
One concern with the regular use of alcohol-containing mouthwash was oral cancer, and the occurrence of oral cancers is not supported by epidemiological evidence. (3)
One of the major drawbacks of mouthwashes containing products such as chlorhexidine is the occurrence of stains on long term use. (4)
So, the final verdict?
(2) Lemos CA Jr, Villoria GE. Reviewed evidence about the safety of the daily use of alcohol-based mouthrinses. Braz Oral Res. 2008;22 Suppl 1:24-31.
(3) La Vecchia C. Mouthwash and oral cancer risk: an update. Oral Oncol. 2009 Mar;45(3):198-200. Epub 2008 Oct 25.
(4) Adams D, Addy M. Mouthrinses. Adv Dent Res. 1994 Jul;8(2):291-301.
Friday, October 30, 2009
Artificial sweetener, "Diet" foods, including soft drinks, drink mixes, gelatin desserts, low-calorie frozen desserts, packets.
Aspartame (Equal, NutraSweet), a chemical combination of two amino acids and methanol, was initially thought to be the perfect artificial sweetener, but it might cause cancer or neurological problems such as dizziness or hallucinations.
A 1970s study suggested that aspartame caused brain tumors in rats. However, the Food and Drug Administration persuaded an independent review panel to reverse its conclusion that aspartame was unsafe. The California Environmental Protection Agency and others have urged that independent scientists conduct new animal studies to resolve the cancer question. In 2005, researchers at the Ramazzini Foundation in Bologna, Italy, conducted the first such study. It indicated that rats first exposed to aspartame at eight weeks of age caused lymphomas and leukemias in females. However, the European Food Safety Authority reviewed the study and concluded that the tumors probably occurred just by chance.
In 2007, the same Italian researchers published a follow-up study that began exposing rats to aspartame in utero. This study found that aspartame caused leukemias/lymphomas and mammary (breast) cancer. It is likely that the new studies found problems that earlier company-sponsored studies did not because the Italian researchers monitored the rats for three years instead of two. The Italian tests remain controversial, with the industry contending that they were flawed in several ways and with the FDA stating its scientists couldn't evaluate the studies because the researchers refused to provide their original data.
In a 2006 study, U.S. National Cancer Institute researchers studied a large number of adults 50 to 69 years of age over a five-year period. There was no evidence that aspartame posed any risk. However, the study was limited in three major regards: It did not involve truly elderly people (the rat studies monitored the rats until they died a natural death), the subjects had not consumed aspartame as children, and it was not a controlled study (the subjects provided only a rough estimate of their aspartame consumption, and people who consumed aspartame might have had other dietary or lifestyle differences that obscured the chemical’s effects).
The bottom line is that lifelong consumption of aspartame probably increases the risk of cancer. People—especially young children—should not consume foods and beverages sweetened with aspartame, should switch to products sweetened with SUCRALOSE (Splenda), or should avoid all artificially sweetened foods. Two other artificial sweeteners, SACCHARIN and ACESULFAME-K, have also been linked to a risk of cancer.
Friday, July 3, 2009
Was working on some topic when I came across this quote. Thought it was funny, then I realised its actually factual. Quoted by an anonymous person who says “Love is a matter of chemistry, but sex is a matter of physics”. Well I thought love and sex are both related to chemistry i.e., the hormones in our body. Well physics applies, but I am not sure how. Any enlightened people can put in some ideas??