Living without your adrenal glands is entirely possible, but it requires taking hormone replacement medications every single day for the rest of your life. The adrenal glands produce cortisol, aldosterone, and adrenaline, and while losing the adrenaline supply turns out to be surprisingly manageable, losing cortisol is immediately life-threatening without pharmaceutical replacement. Thousands of people worldwide have had both adrenal glands surgically removed and go on to live full lives, though the adjustment is far from trivial and the margin for error is thinner than most people expect.
Why Both Adrenal Glands Would Be Removed
Surgeons do not take out both adrenal glands lightly. The most common reason for bilateral adrenalectomy is Cushing’s disease that has not responded to other treatments. When a pituitary tumor drives the adrenal glands to overproduce cortisol, and pituitary surgery fails or the source of excess cortisol cannot be located, removing both adrenals is sometimes the fastest way to stop the damage that runaway cortisol inflicts on the body.1PubMed Central. Adrenalectomy for Cushing’s syndrome: do’s and don’ts Bilateral adrenalectomy is also used when rapid normalization of cortisol levels is medically urgent.2PubMed. Bilateral adrenalectomy for Cushing’s disease
Another scenario involves pheochromocytoma, a tumor of the adrenal medulla that secretes bursts of adrenaline and can cause dangerous blood pressure spikes. In people with genetic syndromes that predispose them to bilateral tumors, both glands sometimes need to come out. And in rare cases of bilateral cortisol-producing adenomas, surgery on both sides is the only definitive fix. Regardless of the indication, once both glands are gone, the body loses its only factory for cortisol and aldosterone, and it loses its primary adrenaline source as well.
The Two Hormones You Absolutely Must Replace
Your adrenal glands sit atop each kidney and produce dozens of hormones, but two are non-negotiable for survival. Cortisol, the primary glucocorticoid, rises in response to stress and is essential for life. It regulates blood sugar by stimulating the liver to produce glucose, it controls inflammation, and it helps maintain blood pressure. Aldosterone, the primary mineralocorticoid, fine-tunes your body’s sodium, potassium, and water balance by acting on the kidneys.3Anaesthesia & Intensive Care Medicine. Adrenocortical hormones Without either of these, organ systems begin to fail within hours to days.
After bilateral adrenalectomy, cortisol is replaced with oral hydrocortisone, usually taken two or three times daily. The typical daily dose falls somewhere around 15 to 25 milligrams, though the exact amount depends on body size and individual need. Getting this dose right matters enormously: too little and you risk fatigue, low blood pressure, and potentially a life-threatening adrenal crisis; too much and you face weight gain, bone loss, and metabolic problems over time.4PubMed. The circadian rhythm of corticosteroid-binding globulin has little impact on cortisol exposure after hydrocortisone dosing
Aldosterone is replaced with fludrocortisone, a synthetic mineralocorticoid. Most patients need around 0.1 to 0.2 milligrams per day to maintain normal sodium and water balance, though the right dose varies from person to person.5PubMed. Evidence that patients with Addison’s disease are undertreated with fludrocortisone In fact, some research has shown that not every patient with adrenal insufficiency even needs fludrocortisone. In one study of eight patients, four maintained normal sodium balance even after their fludrocortisone was discontinued, suggesting their hydrocortisone alone provided enough mineralocorticoid activity for them.6PubMed. Mineralocorticoid replacement in Addison’s disease That said, clinicians typically prescribe it as a default and adjust based on blood pressure, potassium levels, and other markers.
What Happens to Adrenaline
People are often surprised to learn that losing the adrenal medulla, the inner part of the gland that pumps out adrenaline, is the least problematic part of losing your adrenal glands. The body has a backup system. Sympathetic nerve endings throughout the body release norepinephrine, a close chemical cousin of adrenaline, and they can ramp up their output when the adrenal medulla is gone. Animal research has shown that after the adrenal medulla is removed, norepinephrine turnover accelerates in organs like the pancreas and brown fat tissue, indicating that the sympathetic nervous system partially compensates for the lost adrenal supply.7PubMed. Compensation between sympathetic nerves and adrenal medullary activity: effects of adrenodemedullation and chemical sympathectomy on catecholamine turnover This is why adrenaline replacement is not part of the standard medication regimen after bilateral adrenalectomy. People without adrenal glands can still mount a fight-or-flight response, albeit a somewhat blunted one. They may notice that their heart rate does not spike quite as dramatically during acute stress, but day-to-day function is generally unaffected.
The Problem With Mimicking a Natural Rhythm
In a healthy body, cortisol follows a pronounced daily cycle. Levels climb in the early morning hours, peak around the time you wake up, and gradually taper through the afternoon and evening. Conventional hydrocortisone tablets absorbed in a single burst cannot replicate that pattern well. A morning dose produces a sharp spike followed by a decline that may leave late-afternoon and evening levels either too high or too low depending on when the next dose is taken.
This mismatch matters. Research using hydrocortisone infusion pumps and modified-release tablets has shown that mimicking the natural circadian cortisol profile improves both biochemical control and quality of life in patients who lack their own cortisol production.8PubMed Central. Replication of cortisol circadian rhythm: new advances in hydrocortisone replacement therapy Pharmacokinetic modeling suggests that a modified-release hydrocortisone tablet taken at night and a standard dose in the morning could come close to reproducing the body’s natural cortisol curve.9PubMed Central. Modified-release hydrocortisone to provide circadian cortisol profiles These newer formulations are available in some countries and represent a meaningful improvement over the old “take a pill three times a day” approach, though they are not yet universally accessible or affordable.
Another emerging option is subcutaneous hydrocortisone infusion through a pump similar to the ones used for insulin. The pump can be programmed to deliver different rates of cortisol at different times of day, recreating both the daily cycle and potentially the smaller, pulsing rhythm of cortisol secretion that even modified-release pills cannot match. Early studies indicate that pump therapy causes few complications and improves quality of life.10The Journal of Clinical Endocrinology & Metabolism. Extended-release Hydrocortisone Formulations—Is There a Clinically Meaningful Benefit?
Adrenal Crisis and the Emergency Card
The most dangerous moment for someone without adrenal glands is not a normal day. It is a day when the body needs more cortisol than usual and cannot produce it. An adrenal crisis can happen during an infection with a high fever, severe emotional stress, surgery, or even a gastrointestinal illness that prevents you from absorbing your oral medication. If untreated, the cascade of falling blood pressure, electrolyte imbalances, and organ dysfunction can lead to shock and death.11PubMed. Diagnosis and management of secondary adrenal crisis
Prevention comes down to two things: knowing when to increase your steroid dose, and having the means to get cortisol into your body fast if you cannot swallow pills. During a moderate illness, doubling or tripling the oral hydrocortisone dose is standard advice. But if vomiting makes that impossible, you need an injection. All patients with adrenal insufficiency should carry a steroid dependency alert card and wear medical identification so that emergency responders know to give steroids immediately.12PubMed Central. Adrenal crisis: prevention and management in adult patients During surgery, additional stress doses of hydrocortisone are given on top of the usual replacement, because the physiological stress of an operation would normally trigger a cortisol surge that these patients cannot produce on their own.13PubMed. Guidelines for the management of glucocorticoids during the peri-operative period for patients with adrenal insufficiency
In practice, however, the emergency injection system is clunkier than it should be. A recent study found that over 60 percent of patients with adrenal insufficiency had needed an emergency hydrocortisone injection at some point, yet fewer than 20 percent managed to self-inject. The biggest barrier was the complexity of the multi-step injection process, which requires mixing a powder and liquid under stress. Around 97 percent of participants said they would prefer a simpler autoinjector device.14PubMed Central. Patient and caregiver experiences with hydrocortisone injections in adrenal crisis: a mixed-methods cross-sectional study This gap between what patients need and what is available remains one of the most frustrating practical realities of living without adrenal glands.
Long-Term Side Effects of Replacement Therapy
Even when the daily dose is carefully calibrated, long-term hydrocortisone replacement carries risks that accumulate over years. Bone health is a particular concern. A six-year study of patients on glucocorticoid replacement found that higher body-surface-area-adjusted doses predicted worse bone mineral density at both the hip and the neck of the femur.15PubMed Central. Effects of Dual-Release Hydrocortisone on Bone Metabolism in Primary and Secondary Adrenal Insufficiency: A 6-Year Study Another long-term follow-up found that after five years on conventional hydrocortisone, patients showed significant increases in body mass index and waist circumference alongside significant decreases in lumbar spine bone density.16Scientific Reports. Long-term outcomes of conventional and novel steroid replacement therapy on bone health in primary adrenal insufficiency These are the same problems seen with chronic steroid use in other contexts: weight gain, thinning bones, and changes in body fat distribution. The challenge is that unlike someone taking steroids for, say, asthma, a person without adrenal glands cannot taper off. The goal becomes finding the lowest effective dose, which is why precision in replacement matters so much.
Nocturnal hypoglycemia is another underappreciated issue. Without the natural cortisol rise that normally begins during the early morning hours, blood sugar can drop to low levels during sleep. Continuous glucose monitoring studies have detected these overnight lows in patients with primary adrenal insufficiency, episodes that the patients themselves were not aware of but that can impair sleep quality and overall well-being.17PubMed Central. Nocturnal hypoglycemia identified by a continuous glucose monitoring system in patients with primary adrenal insufficiency (Addison’s Disease)
What Quality of Life Actually Looks Like
This is the question most people really want answered: not just “can you survive,” but “will your life be okay?” The honest answer is mixed. A study of 27 patients who had both adrenal glands removed for hereditary pheochromocytoma found that mortality was low and most had adapted well. But fatigue, worry about crises, and inconsistent medication compliance were common problems.18PubMed. Quality of life after bilateral adrenalectomy in MEN 2
Data from a Swedish national audit showed that patients who had adrenalectomy for functional tumors (those causing hormone overproduction) reported significant improvements in quality of life afterward across both physical and mental health measures.19PubMed Central. Health-related quality of life in patients undergoing adrenalectomy: report from a Swedish National Audit That makes sense: if your glands were making you sick through hormone excess, removing them and switching to controlled replacement is often an upgrade. Even so, these patients still scored lower in quality of life than the general population, suggesting that replacement therapy, no matter how well managed, does not perfectly substitute for having functioning glands.
A more recent comparison looked at quality-of-life scores between people who had bilateral adrenalectomy and people with autoimmune Addison’s disease, where the adrenal glands are destroyed by the immune system rather than removed surgically. Scores on the Addison’s disease-specific quality-of-life questionnaire were similar between the two groups. Interestingly, those who had their glands removed for pheochromocytoma scored better than those who had them removed for Cushing’s disease, and the autoimmune group actually reported more adrenal crises in the previous year than the surgical group.20Journal of the Endocrine Society. Adrenal crises and quality of life after bilateral adrenalectomy vs primary autoimmune adrenal insufficiency The takeaway is that life without adrenal glands is comparable to other forms of adrenal insufficiency, and that the underlying reason for losing the glands matters as much as the loss itself.
When Surgeons Can Save Part of the Gland
Given the lifelong consequences of total bilateral adrenalectomy, surgeons increasingly try to preserve at least a sliver of adrenal tissue when the tumor allows it. Partial adrenalectomy, where only the tumor and a margin of normal tissue are removed, can leave enough functioning adrenal cortex to maintain hormone production without any replacement pills. A systematic review and meta-analysis found that about 85 percent of patients who underwent partial adrenalectomy remained steroid-free afterward, with rates as high as 97 percent in certain tumor types.21PubMed. Recurrence and functional outcomes of partial adrenalectomy: a systematic review and meta-analysis
The trade-off is a higher chance of the tumor coming back. For small, benign lesions the recurrence rate is low and the risk of malignancy is negligible, making partial removal a sensible first-line approach.22PubMed Central. Partial Adrenalectomy: An Underutilized First Line Therapy for Small Adrenal Tumors For bilateral pheochromocytoma, a meta-analysis of over 1,400 patients confirmed that partial adrenalectomy dramatically reduced the risk of needing lifelong steroids and lowered the odds of experiencing an adrenal crisis, but the tumor recurrence rate was roughly three to four times higher than with total removal.23Frontiers in Endocrinology. Total versus partial adrenalectomy in bilateral pheochromocytoma – a systematic review and meta-analysis In many cases, that trade-off still favors the partial approach because recurrent pheochromocytoma can be monitored and treated, while adrenal crisis is an ongoing, daily risk for the rest of a patient’s life.
Pregnancy Without Adrenal Glands
Pregnancy is one of the more complex situations for someone living without adrenal function. During a normal pregnancy, the body’s cortisol production roughly doubles by the third trimester to meet the metabolic demands of growing a baby. A woman on hydrocortisone replacement needs to have her dose increased as pregnancy progresses to keep pace with that rising demand, and monitoring becomes tricky because many of the usual blood tests for cortisol levels are thrown off by pregnancy-related changes in binding proteins.24PubMed Central. Treatment of Addison’s disease during pregnancy Dose adjustments are guided mostly by clinical symptoms rather than lab values, and some women also need an increase in fludrocortisone, particularly in the third trimester when fluid and electrolyte demands peak.25PubMed Central. Fertility and pregnancy in adrenal insufficiency Labor and delivery require stress-dose steroids, just as any surgery would. With proper management, successful pregnancies are very much achievable, but they require close coordination between endocrinology and obstetric teams.
The Bioartificial Adrenal and Other Experimental Approaches
The current state of hormone replacement works, but it is crude by biological standards. You are swallowing a pill a few times a day to replace a system that normally adjusts its output minute by minute. Researchers are working on approaches that could restore something closer to natural adrenal function.
One line of research involves transplanting adrenal cells encapsulated in protective materials. In a proof-of-concept study, bovine adrenocortical cells were encased in alginate, a seaweed-derived gel, and transplanted into rats that had their adrenal glands removed. The encapsulated cells survived, produced cortisol detectable in the rats’ blood, and responded to the pituitary hormone ACTH by increasing their cortisol output, just as a normal adrenal gland would.26PubMed Central. Transplantation of bovine adrenocortical cells encapsulated in alginate The encapsulation protected the foreign cells from the immune system, at least for the several weeks the experiment ran.
Other researchers are exploring whether stem cells could be coaxed into becoming adrenal-like steroidogenic cells, or whether gene therapy could address conditions like congenital adrenal hyperplasia at their genetic root. A key challenge is that the adrenal cortex is a high-turnover organ: its cells are constantly being replaced from a pool of progenitor cells. Any transplant that does not include those progenitor cells will eventually burn through its supply and fail.27PubMed. Future Directions for Adrenal Insufficiency: Cellular Transplantation and Genetic Therapies These approaches are years from clinical use, but they represent a fundamentally different ambition from simply refining the timing of a hydrocortisone pill. The goal is to restore the feedback loop itself, so that the body regulates its own cortisol again rather than relying on a patient to get the dose and timing right every day.