Showing posts with label fat. Show all posts
Showing posts with label fat. Show all posts

Thursday, December 27, 2012

Green Tea Extract: Does it Burn Fat?


Bodybuilders are the biggest target audience, but everyone can be intrigued by the claim: green tea extract helps the body burn fat.

But does it really?

Supporters claim the key compounds in green tea is Epigallocatechin gallate (EGCG), what the New York Times calls "a potent antioxidant thought of by some as a sort of kryptonite to body fat." Proponents of the extract claim reduces fat gain and enhances fat-burning. 

However, simply drinking green tea won't provide EGCG in high-enough concentration, say extract manufacturers. Hence the need for the extract.

The Cochrane Database of Systematic Reviews published a study this month in the American College of Sports Medicine's Medicine and Science in Sports and Exercise

In this study, 31 men were divided into three groups: one given the extract in a dose equivalent to eight cups of green tea a day, one given a placebo, and yet another given lower doses of the green tea extract plus placebos. The men were given similar diets and exercise regimens.

After a week, extensive blood tests revealed little difference between the groups. The conclusion: EGCG did not offer the benefits touted by its fans.

Don't rely on supplements for the the benefits of a healthy diet and exercise. There is no magic bullet or shortcut. 

Friday, January 23, 2009

How Much Fat Should You Be Eating?

The other day I was debating with another trainer about how much fat a person should consume as part of their daily caloric intake.

The breakdown should look like this:
  • 50 percent carbohydrates
  • 25 percent protein
  • 25 percent fat

At first glance, this may look lopsided. Fat has 9 calories per gram, where as protein and carbs have 4 calories per gram.

As you look at this and do the math, that means on a 2,000 calorie diet (recommended for most men), you will have 1,000 calories a day in carbs, 500 in protein and 500 in fats.

Now, that doesn't mean we go eat extra Twinkies on our light eating days.

What this means is we need to eat good healthy fats for this kind of ratio: peanuts, olive oil, avacados, peanut butter and fish oils — not lard, mayonnaise and deep fried foods.