As if there weren’t enough temptations out there to get us to pack on a few pounds. Whether it’s Doritos or fast food or just a giant plate of ribs, we now have to worry about something called “cortisol belly.” (I don’t remember eating anything called “cortisol.”) (OK, that’s a joke.)
Anyway, “cortisol belly” is the wellness-internet term for weight that will not budge despite cardio, clean eating, and willpower. What it comes down to is this: sometimes stress can cause your body to make it harder to lose weight.
A popular refrain you probably hear from friends or see online: “I have tried fasting. I have tried cutting carbs. I am running four times a week and nothing is working.” It is rarely a calorie problem. Let’s dig into it.
RELATED: Adaptogens explained in plain English: which ones actually have data
Step 1: Reset your cortisol rhythm first with a little morning sun
News flash: your body is supposed to feel more alert and awake in the morning. While feeling more relaxed at night. But that’s usually not the way life works. (Not my life anyway.)
One of the simplest ways to reset that rhythm is to get outside shortly after waking up. Don’t wait. Make it part of your morning ritual. Get up, put on some clothes (ideally) and get outside.
Morning daylight tells your brain, “This is the start of the day.” That signal helps set your internal clock, making it easier to feel awake in the morning and sleepy later at night. One sticking point is that you have to go outside, because light through a window is not as strong.
You don’t need to sit there an stare into the sun. You can drink coffee or tea outside, take a short walk, or just be within sight of the sun, but you don’t need to stare into it!
Step 2: No Caffeine after 2pm
Sometimes it seems like school doesn’t teach us some of the most important things in life. Like how mortgages work. Or how long caffeine stays in your system. Let’s fix that. Caffeine has a “half-life” of five-to-six hours. Which means that if you have a cup of joe at 3pm, it is still 25% active at 9pm. Which can give you that “tired but wired” feeling when you’re trying to get to sleep. And even if you’re able to fall asleep then, you’re sleep quality goes way down. And you guessed it: poor sleep quality elevates your cortisol levels the next day. Make sure you have no caffeinated beverages after 2pm. If you need something to drink, try switching to decaf or herbal tea after 2pm.
Step 3: Magnesium glycinate every single night
I think magnesium may be our most endorsed supplement on The Greenest. Why? Becuase it lowers your nervous system’s excitability. And when your nervous system is calm, it helps your sleep scores. And as we just mentioned, high quality sleep helps lower your cortisol levels. It’s all connected. Most supplements recommend 200-400 mgs of elemental magnesium glycinate to shift your baseline cortisol within 2-3 weeks.
Magnesium directly lowers nervous-system excitability. Which translates to consistent nighttime dosing of 200 to 400 milligrams of elemental magnesium glycinate shifts baseline cortisol within two to three weeks. Make sure you get the magnesium glycinate because that matters. Doctor’s Best High Absorption Magnesium is the one we recommend the most. Thorne’s Magnesium Bisglycinate is the premium tier if you have the budget, but Doctor’s Best is great for any budget.
Think of magnesium as your foundational fight against cortisol. When you pair it with morning daylight and good caffeine habits it starts to stack a program that typically shows results in the first month.
Step 4: Make turning your phone off a bedtime ritual
The single biggest evening cortisol driver is screen-scrolling in bed. Replace it with ritual. Beam Dream Powder — a warm reishi-magnesium hot cocoa — is the most consistent swap I have found. The drink is the cue. The actives do the rest. Reishi and L-theanine in the formula nudge the parasympathetic system. It’s not just a placebo of routine.
If a powdered drink is not your style, the cheaper version of this habit is a half hour of dim light, a book, and a magnesium pill. The mechanism is the same: a non-screen wind-down window that lets cortisol fall the way it is supposed to.
Step 5: Add a dash of ashwagandha
Adaptogens have kind of weird reputation. A lot of their promoted benefits are rooted in ancient(ish) cultures. There’s not a ton of clinical data around them. But Ashwagandha (specifically the KSM-66 extract) is different and that’s why it’s on this list. It has the strongest clinical data in the entire adaptogen category. It has shown to provide 20-30% cortisol reduction over eight weeks across multiple randomized trials. (And most of those were based on 300 to 600 daily milligrams.) Just make sure you get the KSM-66 or Sensoril extract forms. Generic “ashwagandha powder” is not the same. In fact it’s a totally different molecule so the data doesn’t apply.
For sourcing, I recommend NutriRise Ashwagandha 1300 mg or Himalaya Organic Ashwagandha at the budget tier. Plan on it taking 6-8 weeks to see a difference. It takes a while but it could be a great choice for you.
Step 6: Try a weighted blanket
Weighted blankets get a bad rap (or should it be wrap?) They feel like one of those things sold during late night infomercials or only on social media. But there’s some actually surprising science behind them. If you’re one of those people that wakes up at 3am and then starts an anxiety spiral that keeps you up for hours, the increased pressure of a weighted blanket can interrupt the spiral cycle. And it does it by activating your parasympathetic nervous system. It sounds simple but it works. And there’s quite a bit of data to back that up. YnM Weighted Blanket at the 15-pound size covers most adults.
Step 7: Try a little cold plunge or hot sauna
It seems the Fins are onto something. In Finland it seems like everyone has their own sauna. And there’s a reason beyond “it’s always freezing.” There’s been a ton of data around the benefits of using a sauna 4 times a week that is getting hard to ignore. Same with a cold plunge. Consistent yet brief exposure ot cold or heat trains your body to reset faster after stress. Obviously these are pretty expensive, so they can be limiting to who can participate. But if you have the budget, try the Plunge All-In or the cheaper Ice Barrel.
Nutrition tweaks that lower the cortisol load
After trying a few of the options above, next focus on food. Because the supplements are half the battle. The food is the other half. Here are a few things to keep in mind:
- Eat protein first. 25 to 35 grams within an hour of waking. Glucose stays steadier all day, which keeps the cortisol-to-stabilize-blood-sugar reflex from firing.
- This is your OK to eat pasta! Do not fear carbs. Chronically low-carb eating raises cortisol in many people. Aim for 100 to 150 grams a day from whole sources.
- Pump up the Magnesium-rich foods alongside the pill. Pumpkin seeds, dark leafy greens, dark chocolate. They reinforce the supplement.
- Curb the alcohol. Even one drink in the evening fragments deep sleep and raises overnight cortisol. If you must drink, do it earlier, with food.
- Beans beans beans. Specifically, 25 to 35 grams a day. Fiber feeds the gut bacteria that produce short-chain fatty acids, which directly influence mood and the cortisol response. (See our list of foods that hit both targets in one serving.)
Related on TheGreenest: Adaptogens explained in plain English · The 7 types of magnesium · The sleep stack for 3 a.m. wake-ups
Christine Morgan is a Registered and Licensed Dietitian who currently practices in dialysis. Her experience includes renal nutrition, food service, and geriatrics. Her education includes a Bachelor of Science in Nutrition and Dietetics from West Chester University of Pennsylvania, and she completed her Dietetic Internship with the University of Delaware. She is also a member of the Tri-State Renal Dietitians Association.
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