I was prescribed green tea by my dietitian for weight loss. I tried it but I then switched to earl grey (with bergamot) black tea. I just wanted to know is earl grey also helpful in mobilizing excess fat and weight reduction? What about chamomile? Moreover, how many cups a day should I take for the weight loss effect to be substantial?

  • Possible duplicate of Which is better for health tea, water tea or milk tea?
    – John
    Aug 12, 2016 at 9:42
  • Welcome to health SE :-). It is best to stick to one question per post, so it would be easier to compose a proper answer with references. Would you like us to focus on effects of black tea (i.e. earl gray) or chamomile? For the quantity there may be some references, but this question would be answered best by your dietitian.
    – Lucky
    Aug 23, 2016 at 7:46
  • I would like to know about black tea first Aug 23, 2016 at 10:30
  • Black tea has caffeine which will make you move more, but for best results try matcha green tea. Not just green tea, matcha. It's more sustained over a longer period of time. Of course if your goal is weight loss, it's better to skip the late version with whipped cream. Chamomile will make you sleepy - not good for movement or burning calories.
    – Chloe
    May 8, 2017 at 13:54

1 Answer 1


So with everything related with diet there are two effects: whether a particularly diet affects what macronutrients you eat, and the effect of the food itself.

According to NHS advice green tea in the amounts that you would consume by drinking it have limited effects on the metabolism. Missing from this advice is the evidence that in larger doses green tea can have a modest effect on energy expenditure ~5% increase in energy consumption.

I suspect that the benefits of regularly tea consumption may have more to do with behaviour than energy use though, in which case it doesn't really matter which tea you drink. To get an idea what's going on here you might like to track your calories / what you eat during the day to get a feel for the effect that that tea might be having. There can be a bit of a heisenberg effect here.

Coffee on the other hand can act as quite an effective appetite suppressant.

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