Archive for April 24th, 2008

The Dangers of Too Much TEA….

April 24, 2008

One of the highlights of the Mayo Endocrine Course in Mallorca Spain was the Clinical Pearls that we get after a case presentation.  And one of those cases that I found very interesting was a case of  lady who had a bone xray suggestive of a “strong” bone and a bone mass that was suggestive of a “thick ” bone.  She was therefore confident that she won’t fracture because she did not have any osteoporosis based on Xray and Bone mass measurement.

However upon review at the Mayo Clinic her bones were actually not normal.  So further evaluation was done and showed her to be drinking at least 10 tea bags of a commercial brand per day as a way of quenching her thirst.  Without her knowledge, she was taking in too much flouride into her sytsem coming from drinking too much tea!!!  She was developing a state of Flourosis which can cause a bone disease called Osteosclerosis.  From being told that she has strong bones to now being counseled to be careful not to fracture… was too extreme for her to understand!

Osteosclerosis can be due to taking in too much flouride in the body.  The problem with this disease is you have Brittle bones and therefore on Xray, you may have thick bones but the quality of the bone is poor!!!

Just how much flouride in is one tea bag?  In one study published in Amercan Journal of Medicine in 2005:

“Two independent testing laboratories determined that mean fluoride concentrations in 10 brand-name tea solutions ranged from 1.0 to 6.5 ppm. One tea exceeded the EPA safety limit of 4.0 ppm for drinking water, and several surpassed the U.S. Food and Drug Administration limit of 1.4 to 2.4 ppm for bottled beverages. “

So my frineds…please be careful with too much tea in a day.  I know of some chinese patients who use tea as their drinking water.  Just as the saying goes…

 Too much of a Good Thing can also be BAD!