Green tea weight loss should also improve key biochemical indicators of good health. Research shows some surprise bonuses when EGCG bioavailability is also improved. Here is what you can expect..
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Basic Research on Green Tea Weight Loss

The research that I want to call your attention to was published in this journal article:

Di Pierro, F., Menghi A.B., Barreca, A., Lucarelli, M, and Calandrelli, A. 2009. Greenselect Phytosome as an adjunct to a low-calorie diet for treatment of obesity: a clinical trial. Alternative Medicine Review 14(2):154-160.

Earlier posts explained the development of technology to enhance the bioavailability of green tea extracts and how it boosted the results of the clinical weight loss trial here:

Green Tea Weight Loss – The Real Science

Boosting Green Tea Weight Loss

By the way, if you want to see the complete article, it is available for free through PubMed, here:

http://www.ncbi.nlm.nih.gov/pubmed/19594224

In fact, I recommend that you take a look at the complete article to see the depth of detail that is missing from the abstract. The main result relates to the purpose of the study, which was to determine the effects of a certain green tea extract on weight loss.

Expected Benefits

Based on prior research on green tea, particularly on EGCG, we can expect certain biochemistry to improve, such as total cholesterol (TC), fasting blood sugar (BS), and total triglycerides (TT), as shown in Table 3:

Surprise Benefits

Certain changes may not have been a complete surprise to the researchers, because they took the trouble to make before and after measurements of these health indicators. However, not all of these results are general knowledge for those who use green tea to lose weight. We may have expected improvements in LDL and HDL levels. However, the 321% increase in levels of human growth hormone (GH) is an unexpected bonus. See Table 4 here:

Hormones that are intimately intertwined with human growth hormone include insulin-like growth factor 1 (IGF-1) and insulin. All of these are protein hormones. Indeed, IGF-1 is a more reliable indicator of GH activity, since GH levels spike several times per day and its cohort, IGF-1, does not. The change in cortisol levels reflects the beneficial influence of EGCG on steroid metabolism. See Table 5 here:

The really cool result would seem to be that GH levels increased by 321 percent over the starting point. However spectacular this seems, it may mean very little. However, the 24 percent increase in IGF-1 is truly something to get excited about. Note also that a reduced calorie diet by itself even led to a 15 percent increase in this hormone. That observation alone should tell you that eating too much is probably harmful to proper hormone balance. It suggests a link to the already established knowledge about wild hormone imbalance in the obese.

Updating green tea weight loss research,

Dr. D