Can’t live without caffeine, can you? Most adults around the world consume caffeine every day, in coffee, tea, cola, or chocolate. And we continue to hear about new studies – some warning us to stay away from caffeine and others glorifying its benefits.

So what is the truth?

A scientist from the UK reviewed 41 caffeine studies from the last 15 years. Most of the studies found that low to moderate caffeine intake – less than 400 mg per day (the equivalent of no more than eight cups of tea or four cups of ordinary coffee) – improved alertness and mental performance. Studies also found that up to 400 mg of caffeine per day did not cause dehydration, which is thought to be a common side effect of caffeine intake.

But beware of mega-coffee! Find out exactly how much caffeine is in your so-called “cup.” For example, a “tall” Starbucks beverage can range from 75 mg of caffeine (Cappuccino) to 150 mg (Caffe Americano) to 260 mg (regular coffee).

[Ed. Note: Fitness expert Craig Ballantyne is the creator of the Turbulence Training for Fat Loss system. For a free online source of information, motivation, and social support to help you improve your health, lose weight, and get fit, sign up for ETR’s free natural health e-letter.]

Craig Ballantyne

If you want to double your income, work less, and become the ambitious millionaire you've always wanted to be... Craig Ballantyne is the coach who will help you do it. With more than 20-years of experience as an entrepreneur and five 7-figure businesses under his belt, he specializes in helping "struckling" entrepreneurs get out of the mud and build the business of their dreams. To see if you qualify for Craig's "Millionaire Coaching Program" send an email to with the subject line "Millionaire".