Can Coffee Increase Your Metabolism and Help You Burn Fat?

-
Young Woman Smiling With Cup of CoffeeCoffee contains caffeine… which is the most commonly consumed psychoactive substance in the world.
Caffeine has made its way to most commercial fat burning supplements, for good reason.
It is one of the few substances that is known to help mobilize fats from the fat tissues and increase metabolism.

Coffee Contains Stimulants

Coffee isn’t just warm black water.
Substances in the coffee beans do make it into the final drink.
In fact, coffee contains several biologically active substances that can affect metabolism:
  • Caffeine – a central nervous system stimulant.
  • Theobromine and Theophylline – substances related to caffeine that can also have a stimulant effect.
  • Chlorogenic Acid – one of the biologically active compounds in coffee, may help slow absorption of carbohydrates (1).
The most important of these is caffeine, which is very potent and has been studied thoroughly.
What caffeine does in the brain, is to block an inhibitory neurotransmitter called Adenosine (2, 3).
By blocking Adenosine, caffeine increases the firing of neurons and the release of neurotransmitters like Dopamine and Norepinephrine.

Coffee Can Help to Mobilize Fat From The Fat Tissues

Cup of Coffee
Caffeine stimulates the nervous system, which sends direct signals to the fat cells to tell them to break down fat (4, 5).
Another thing that caffeine does is to increase our blood levels of the hormone Epinephrine, which is also known as Adrenaline (6, 7).
Epinephrine travels through the blood, to the fat tissues and send signals to break down fats and release them into the blood.
This is how caffeine helps to mobilize fat from the fat tissues, making it available for use as free fatty acids in the blood.

Coffee Can Increase The Metabolic Rate

How many calories we burn at rest is called the Resting Metabolic Rate (RMR).
The higher our metabolic rate, the easier it is for us to lose weight and the more we can allow ourselves to eat without gaining.
Studies show that caffeine can increase the metabolic rate by 3-11%, with larger doses having an even bigger effect (8, 9).
Interestingly, most of the increase in metabolism is caused by an increase in the burning of fat (10).
Unfortunately, the effect is less pronounced in those who are obese.
In one study, the increase in fat burning in lean people is as high as 29%, while in obese individuals the increase is about 10% (11). The effect also appears to diminish with age and is more pronounced in younger individuals (12).
Caffeine can improve athletic performance via several mechanisms, one of those being increased mobilization of fatty acids from the fat tissues. Studies show that caffeine can improve exercise performance by 11-12%, on average (13, 14).

Coffee and Weight Loss in The Long Term

Coffee Beans
There is one major caveat here, and that is the fact that people become tolerant to the effects of caffeine (15,16).
In the short term, caffeine can boost the metabolic rate and increase fat burning, but after a while people become tolerant to the effects and it stops working.
But even if coffee doesn’t make you expend more calories in the long term, there is still a possibility that it blunts appetite and helps you eat less.
In one study, caffeine had an appetite reducing effect in men, but not in women – making them eat less at a meal following caffeine consumption. However, another study showed no effect for men (17, 18).
Whether coffee or caffeine can help you lose weight in the long term may depend on the individual. At this point, there is no evidence that it can help with weight loss in the long term.

Take Home Message

Even though caffeine can boost your metabolism in the short term, this effect is diminished in long-term coffee drinkers due to tolerance.
If you’re primarily interested in coffee for the sake of fat loss, then it may be best to cycle it to prevent a buildup of tolerance. Perhaps cycles of 2 weeks on, 2 weeks off.
Of course, there are plenty of other great reasons to drink coffee, including the fact that coffee is the single largest source of antioxidants in the western diet, outranking both fruits and vegetables, combined.

Comments

Post a Comment

Popular posts from this blog

Can Giving Up Sugar Make You Lose Weight?

-
Image
Quitting sugar could help you lose weight. You're willing to forgo the sodas and cookies for your waistline's sake, but will it make a difference? The answer is a solid maybe. Quitting refined sugars is an excellent move for your overall health, and if your total calorie intake decreases with the switch, you will lose weight. That said, if you replace your sugary snacks with potato chips and other calorie-dense foods, your won't shed a pound. Sugar and Weight Sugar is a type of carbohydrate, and contains 4 calories per gram. For the most part, a calorie is a calorie to your body no matter where it comes from. Although refined sugar does not directly cause weight gain, it can contribute to overeating. When you consume sugar, your blood glucose levels spike and then plummet, causing you to crave more food -- particularly more sugar for instant energy, perpetuating the cycle. Plus, you're more likely to over-indulge in sweet treats than healthier fare, and lar...
Read more

Your Guide to Strength Training for Women

-
Image
(Image: Mireya Acierto/DigitalVision/GettyImages) It used to be that the weight room of most gyms was filled solely with men (and the occasional brave female). But recently, women have begun to  skew that ratio  more in their favor. And with good reason! There are so many great reasons to add strength training to your fitness routine, regardless of your gender, but specifically for women. But if you're a little unsure of where to start, here's a beginners guide to strength training for women, so you can strut into the weight room with confidence. Benefits of Strength Training for Women While there are a host of  benefits of strength training  for both men and women, strength training is especially beneficial for women. 1. Improving Bone Health:  Strength training is one of your best strategies for keeping your bones healthy as you age, according to a 2009 review in  Clinical Cases in Mineral and Bone Metabolism . "Simply the pushing and pulli...
Read more

Importance of Sugar in the Human Body

-
Image
Sugar has a poor reputation as being an enemy when it comes to creating a nutritious and well-balanced diet. The fact is, however, that you wouldn't be able to survive without sugar. Your body relies on small amounts of sugar to function properly. That doesn't mean that you have license to fill up on sugary foods, but it does mean that there is a place for small amounts of the right kinds of sugar in your healthy eating plan. Sugar for Energy Sugar provides energy to your muscles and acts as a source of energy for your brain and nervous system. You also need sugar because it helps metabolize fats and prevents your body from using protein as energy. Blood sugar -- called blood glucose -- gets broken down in a series of chemical reactions that create energy, which fuels your cells. A hormone called insulin is involved in the process, too -- it's released when you eat sugar and tells your cells to absorb the glucose so they can use it as a source of energy. Backu...
Read more