Cortisol, Stress And Body Fat: Straight Answers To The Top 20 Questions About The Stress Hormone
By Tom Venuto, NSCA-CPT, CSCS
It seems that every time science uncovers some type of association between body fat and anything, opportunistic entrepreneurs are waiting in the shadows to create a product and a marketing campaign around it. They ride the wave into the multi millions, until the buzz dies down or until the Federal Trade Commission (FTC) sues and slaps a padlock on their warehouse doors. Then, it’s on to the “next big thing in weight loss,” because they know there will always be a gullible crowd eagerly waiting for the next quick fix. The most recent example is when researchers discovered a correlation between cortisol and abdominal body fat. Cortisol was then blamed as the latest culprit in the obesity problem, and cortisol-suppressing pills were touted as the “miracle solution.”
Big Claims, Little Proof
After a web search on the subject of cortisol, here are some of the claims you may find:
Stress makes you fat
Cortisol is what makes you fat
Cortisol reducing supplements control stress
Cortisol reducing supplements reduce belly fat
Cortisol reducing supplements get rid of “stress fat”
Cortisol reducing supplements balance hormone levels that cause stress
Cortisol reducing supplements increase muscle growth
Cortisol supplements suppress appetite
Cortisol supplements speed up metabolism
The advertising claims include just enough scientific fact to make even the savviest consumers say, “That makes sense, I think I’ll try that.” They also hit home emotionally by focusing on common hot buttons such as stress (who isn’t at least a little stressed in this day and age?) Brilliant marketing. Convincing. Unfortunately, most of the claims being made are completely false, with only a tiny thread of truth woven in.
Cortisol is a very important hormone that you must understand if you want to get maximum results from your training and nutrition programs, but if you don’t educate yourself, you may become one of the millions of victims to fall for this latest fad. The answers to the frequently asked questions in this article will arm you with the science-based facts, while helping you steer clear of the hype-based scams.
What is cortisol?
Cortisol is a hormone produced by your adrenal glands. It falls into a category of hormones known as “glucocorticoids”, referring to their ability to increase blood glucose levels. Cortisol is the primary glucocorticoid.
Why does your body produce cortisol?
Cortisol is a stress hormone. Your body produces cortisol in response to stress, physical, mental or emotional. This can include extremely low calorie diets, intense training, high volume training, lack of quality sleep as well as common daily stresses such as job pressures, fights with your spouse or being caught in a traffic jam. Trauma, injury and surgery are also major stressors to the body
What does cortisol do?
Cortisol is part of the fight or flight response. Faced with a “life or death” situation, cortisol increases the flow of glucose (as well as protein and fat) out of your tissues and into the bloodstream in order to increase energy and physical readiness to handle the stressful situation or threat.
Is cortisol related to abdominal obesity?
Yes. There is a link between high cortisol levels and storage of body fat, particularly “visceral” abdominal body fat (also known as intra-abdominal fat). Visceral fat is stored deeper in the abdominal cavity and around the internal organs, whereas “regular” fat is stored below the skin (known as subcutaneous fat). Visceral fat is particularly unhealthy because it is a risk factor for heart disease and diabetes.
Does Cortisol Make you fat?
No, cortisol is not “the thing” that makes you fat. In fact, one of the effects of cortisol is to increase the breakdown of stored adipose tissue into glycerol and fatty acids where it can enter the bloodstream and then be used as energy. High levels of cortisol are merely one contributing factor to storage of abdominal fat, not the primary cause. An excess of calories from too much food and not enough exercise is what makes you fat.
If cortisol is related to abdominal obesity, then will taking a cortisol suppressing pill get rid of abdominal (belly) fat?
No. Just because there is an association between high cortisol levels and abdominal body fat doesn’t mean that a taking a cortisol-suppressing pill will remove abdominal body fat. The studies which showed a relationship between cortisol and body fat did not test whether suppressing cortisol removes fat that is already deposited on your body.
Does stress make you fat?
No. If it did, then everyone who is stressed would be gaining fat. Many people lose weight while under stress. In some studies, test subjects with the highest cortisol (and stress) levels lost the most weight. Stress, by itself, does not increase body fat. However, if stress stimulates appetite and leads to overeating, then the excess calories from “stress eating” can make you fatter.
Is cortisol is bad for you?
Cortisol is not “bad for you,” it is a hormone that is essential for life as part of our natural stress response. There are many hormones in our bodies, which in the proper amounts, maintain good health, but in excess or in deficiency, have negative effects or even contribute to health problems or diseases. Cortisol is no different.
Chronically elevated cortisol levels may have a variety of negative effects. Cortisol is catabolic and elevated cortisol levels can cause the loss of muscle tissue by facilitating the process of converting lean tissue into glucose. An excess of cortisol can also lead to a decrease in insulin sensitivity, increased insulin resistance, reduced kidney function, hypertension, suppressed immune function, reduced growth hormone levels, and reduced connective tissue strength. Chronically elevated levels of cortisol can also decrease strength and performance in athletes.
Should you take a cortisol-suppressing supplement to help you lose weight?
In my opinion, no, absolutely not. Cortisol suppressing supplements are not a valid solution for losing weight. The FTC has filed lawsuits against the makers of Cortislim and Cortistress, charging them with making false and unsubstantiated claims that their products can cause weight loss. Lydia Parnes, acting director of the FTC’s bureau of consumer protection says, “The defendant’s claims fly in the face of reality. No pill can replace a healthy program of diet and exercise.” Reducing excessively high cortisol levels through supplement use may prove beneficial in some ways for hard training athletes. However, pills do not make you lose fat. Body fat is lost by creating a caloric deficit through exercise and nutrition.
One of the best ways to keep cortisol in the normal range is to reduce stress and allow time for recovery and renewal. There are effective and natural means of reducing stress that don’t cost a penny, including getting out in nature, deep breathing, enhancing sleep quality, relaxation exercises, meditation and visualization-guided imagery. It's important to develop a calm mind and sense of tranquility.
Carbohydrate consumed with lean protein immediately after training has a cortisol suppressing effect. High glycemic index (GI) carbs in particular, cause an insulin spike, which not only helps restore muscle glycogen, stimulates protein synthesis and kick starts the recovery process, it also helps lower the exercise-induced rise in cortisol. The research supporting this practice is substantial. (This should serve as a warning to people on low carb diets that are so strict that they don’t even allow small amounts of carbs after workouts). Rather than solid food, many athletes prefer a liquid “meal” using a commercial post workout drink containing whey protein and maltodextrin plus dextrose or glucose (fast acting protein and high GI carbs) because the rapid absorption time may speed recovery.
Vitamin C, known mainly for cold or flu protection and antioxidant properties, may decrease cortisol levels. A study by Marsit, et al showed a reduction in cortisol levels in elite weightlifters taking 1000 mg. of vitamin C per day. Other studies have reported similar findings.
Phosphatidyl serine (PS) is a phospholipid, which appears to have cortisol suppressing properties. Studies by Fahey and Monteleone have shown that daily doses of 800 mg can reduce cortisol. These studies did not conclude that PS would help you lose weight or gain more muscle.
Glutamine is an amino acid, which in some studies, has been shown to decrease cortisol and prevent a decrease in protein synthesis. Many strength athletes swear by glutamine for improved recovery, but the research is still not conclusive about efficacy or dosages for athletes or bodybuilders. Much of the research on Glutamine was performed on patients recovering from surgery, burns or traumas (severe stresses to the body).
Acetyl-L Carnitine (ALC) has been studied in Alzheimers patients as a method of improving cognitive function. One study showed that long term use of Acetyl L Carnitine lowered cortisol in the Alzheimers patients. Research on rats and mice has shown that ALC increases luteinizing hormone, which may in turn elevate testosterone. Whether these findings carry over to healthy athletes has yet to be proven, but some coaches and athletes believe that ALC lowers cortisol and elevates testosterone.
It’s important to note that the research on some of these substances is often conflicting and inconclusive. It's also important to note that many of the cortisol suppressing supplements which are marketed to athletes or to people seeking weight loss do not contain doses anywhere near the amounts that were used in the research. (Yet another way that supplement companies deceive consumers).
How can you lower your cortisol levels naturally?
You can lower cortisol naturally. In fact, if you are overtrained, unnatural cortisol suppression may be nothing more than a “band aid,” and continued overtraining can lead to adrenal exhaustion, which could take months to remedy. Sometimes the best thing you can do is take a rest or decrease your training volume and intensity rather than artificially attempt to suppress cortisol. Symptoms of overtraining include elevated resting pulse, sleep disturbances, fatigue, decreased strength and decreased performance.
Avoid very low calorie diets, especially for prolonged periods of time. Low calorie dieting is a major stress to the body. Low calorie diets increase cortisol while decreasing testosterone.
Use stress reduction techniques (stress, anger, anxiety, and fear can raise cortisol)
Avoid continuous stress. Stress is an important part of growth. It’s when you remain under constant stress without periods of recovery that you begin breaking down.
Avoid overtraining by keeping workouts intense, but brief (cortisol rises sharply after 45-60 min of strength training)
Avoid overtraining by matching your intensity, volume and duration to your recovery ability. Decrease your training frequency, and or take a layoff if necessary.
Suppress cortisol and maximize recovery after workouts with proper nutrition: Consume a carb-protein meal or drink immediately after your workout.
Get plenty of quality sleep (sleep deprivation, as a stressor, can raise cortisol).
Avoid or minimize use of stimulants; caffeine, ephedrine, synephrine, etc.
Limit alcohol (large doses of alcohol elevate cortisol).
Stay well hydrated (at least one study has suggested that dehydration may raise cortisol).
How do you spot a weight loss pill scam?
The cortisol pill is just one in a long string of bogus weight loss products, and it won’t be the last! Why? Because weight loss supplements are big business! Eight or nine figure fortunes have been made from the sales of a single product, which was later proven to be a total farce.
How do you protect yourself? Do your homework! Don’t take anything unless you know exactly what’s in the product, why it’s in the product and how much is in the product. Review the scientific research. Don’t buy a weight loss product just because a radio personality says it works! Don’t jump on the phone with your credit card in hand after watching a thirty-minute infomercial! In this day and age, you have to be smarter than that!
About the Author:
Tom Venuto is a natural bodybuilder and author of the #1 best selling e-book, "Burn the Fat, Feed The Muscle,” which teaches you how to burn fat without drugs or supplements using the little-known secrets of the world's best bodybuilders and fitness models. Learn how to get rid of stubborn fat and turbo-charge your metabolism by visiting: www.burnthefat.com.
