Is Tava tea a scam?
Ignore the hype, because this is what it always is.
There is no miracle weight loss tea, diet or pill.
Let's see, what's inside the tea:
Nothing extreme in the Oolong (Wu long) tea.
A little bit of caffeine and theine.
Nothing in the Wikipedia article linked above claims this tea can be used as a weight loss supplement. And there is no such thing as Wuyi Cliff Oolong. Such variety of this tea does not exist.
So this "miraculous" herbal part of the tea is scam. Oolong is (and always was) just a good tonic tea. It does not accelerate metabolic rate more than a simple coffee or black tea.
Pu-erh (a.k.a. Puerh)
http://en.wikipedia.org/wiki/Puerh (Yunnan's province fermented tea)
Except the fact, that this tea is sold in various pressed forms like small bricks or rolled balls, this is another variety of the tea plant.
This tea is miraculous by itself, because it cleans the body of cholesterol by not allowing it to build up from food and not allowing excess fatty acids to form from the food.
This is done by (again) caffeine and theanine, which are also present in oolong tea.
Pu-erh CAN be taken to stop more fat to build up in the body BUT it does not reduce the fat already accumulated around your waist.
So this one is not scam, it helps stop weight gains. But the price of a 20-sachets' package of clean commercial grade Pu-erh bought from the store is above 5 times lower than the price of Tava tea.
Sencha (Japanese green tea)
Yes. Exactly: http://en.wikipedia.org/wiki/Sencha
Just another fancy name for a green tea. The only difference is - the leaves are not ground or crushed, but left whole.
It is the most popular tea in Japan and is included in the tea ceremonies. It is also 80% of all the green tea kind produced in Japan.
Weight loss? Probably. Green tea has some mild effect on giving more energy and accelerating heart rate and brain clarity.
But it is not a miracle.
Japanese are normally not obese because even their "junk food" is healthy (most often, people eat Miso and Ramen soups on the street from local Ramen shops).
Japanese are not obese, because they eat plenty of fish and rice. No trans-fat and no greasy meat treated with growth hormones. (No, you can't force all the fish in the sea to eat milled GMO grains and maize filled with artificial fertilizer and antibiotics).
So, back to the question:
Is Tava tea weight loss miracle?
It is only a good strong tonic that will give you energy from the theine, caffeine and theanine.
And I am sure, somewhere on the box is written that those 10-15 pounds per month are not guaranteed and you need to make light exercise every day and avoid some foods.
Should you invest in this herbal tea or stick with ordinary diet and exercise?