You went to bed at 10:30. You stayed there until 7:00. According to the clock, you got more than eight hours of sleep. So why do you feel like you were hit by a truck when your alarm says it’s time to get up?
For women over 40, the usual suspects are easy to blame. Hormones. Stress. Menopause. Maybe your thyroid. Or perhaps you’ve simply decided that waking up tired is just one more of those “perks” of getting older. But there may be another explanation that often flies under the radar: sleep apnea.
And before you start thinking you’re not at risk because you’re a woman, thin, don’t snore, and don’t fall asleep while driving—think again. In women over 40, sleep apnea can be a totally different animal. Let’s discuss why you may have it—even if you think you don’t—and some of the annoying symptoms and potentially serious health consequences if it goes untreated.
What is Sleep Apnea?
There are two main types of sleep apnea: central and obstructive. Obstructive sleep apnea is far more common and occurs when the upper airway repeatedly narrows or closes during sleep. Breathing may become shallow or stop altogether, sometimes dozens of times an hour. When that happens, oxygen levels can drop and your brain briefly wakes you enough to reopen your airway. You usually don't remember these awakenings the next morning. But your body certainly does.
Central sleep apnea is different. Instead of your airway becoming blocked, the breathing centers in your brain slack on sending the proper signals telling your body to breathe while you’re asleep. Different cause, but many of the same consequences. Instead of moving normally through restorative stages of sleep, your night can become a repeating cycle of sleeping, not breathing properly, briefly waking, and falling asleep again.
So What’s the Big Deal?
You might be okay with feeling tired all day, but all those times you’re waking up can cause chaos with far-reaching consequences. Why? It’s called hormone hell.
While you sleep, your hormones of growth and repair—like melatonin and growth hormone—follow their normal nighttime rhythms, while your “wear and tear” hormones—think cortisol and adrenaline—are supposed to settle down. Every time breathing is compromised, your body responds as though it’s under threat. Adrenaline surges, normal cortisol patterns can become disrupted, and the deep, restorative sleep needed for normal growth hormone release gets interrupted.
Not only can these abnormal hormone fluctuations mess with your metabolism, but repeated drops in oxygen and disrupted sleep can also wreak havoc on your immune system by promoting inflammation.
Since sleep apnea can disrupt multiple hormones, increase inflammation, and keep your nervous system on high alert night after night, it’s easy to understand how your long-term health can be negatively impacted.
Menopause Matters
Before menopause, estrogen and progesterone appear to provide some protection against obstructive sleep apnea. These hormones influence airway muscle activity, breathing control, and where women tend to store body fat. But as hormone levels decline during and after the menopausal transition, some of that protection disappears.
Body composition also tends to change. Women may accumulate more fat around the abdomen and upper body, and changes around the neck and airway can make obstruction during sleep more likely.
That means a woman who never had sleep apnea in her 30s may develop it later—even if she doesn't fit the picture she has in her head of someone with the condition.
Beyond the Fatigue
The symptoms of sleep apnea are sneaky—which is why common symptoms that make women over 40 miserable are often chalked up to the “usual suspects.” Besides fatigue, women may also complain of:
- Insomnia or frequent nighttime awakenings
- Morning headaches
- Brain fog or poor concentration
- Mood changes, anxiety, or depression
- Waking with a dry mouth or sore throat
- Getting up frequently to urinate during the night
- Feeling unrefreshed despite spending enough time in bed
Since these symptoms are vague—and can be seen with other health issues—many practitioners never stop to consider that sleep apnea may be the actual culprit.
How Your Metabolism Feels About It
All that hormonal disruption, fragmented sleep, and repeated stress on your body can eventually take a metabolic toll. Untreated sleep apnea has been associated with insulin resistance, high blood pressure, unhealthy cholesterol levels, cardiovascular disease, and an increased risk of type 2 diabetes.
And then there's weight. Poor-quality sleep can interfere with appetite regulation, glucose control, energy levels, and your ability to exercise and recover normally. If you're exhausted all day, you're probably not going to be particularly enthusiastic about preparing a healthy dinner and heading to the gym.
Weight can also worsen sleep apnea, creating an unfortunate two-way street: excess weight can increase airway obstruction, while disrupted sleep can make weight management more difficult.
But I Don't Snore!
Maybe you don't, but not snoring doesn't automatically rule out sleep apnea. Neither does being thin. Weight is an important risk factor, but sleep apnea can occur in women of any body size. Jaw structure, airway anatomy, nasal obstruction, family history, alcohol use, certain medications, and hormonal changes can all influence risk.
That's why symptoms and risk factors need to be considered together rather than relying on whether a woman looks like the stereotypical sleep apnea patient.
How Do You Know if You Have It?
You can't diagnose sleep apnea based on symptoms alone. If your history raises suspicion, the next step is usually a sleep study. Many people can now be evaluated with a home sleep apnea test, which measures breathing patterns, oxygen levels, heart rate, and other information while you sleep in your own bed.
Home testing isn't appropriate for everyone, however. Some women may need an overnight study in a sleep laboratory, particularly when the diagnosis isn't straightforward or another sleep disorder may be involved—like periodic limb movement disorder.
One number you'll often hear after testing is the apnea-hypopnea index (AHI). It estimates how many times per hour your breathing either stops or becomes significantly reduced.
Generally:
- Fewer than 5 events per hour is considered normal.
- 5 to 14 is considered mild sleep apnea.
- 15 to 29 is moderate.
- 30 or more is severe.
But numbers aren't the entire story. Oxygen levels, symptoms, other medical conditions, and the type of breathing events occurring also matter.
And here’s another thing—a normal study doesn’t always close the case, especially if the study was done at home and your symptoms strongly suggest sleep apnea. I’ve worked with patients whose sleep apnea hid through two or three sleep studies before we finally caught it in the act. If it quacks, has feathers, and has webbed feet, it’s not a cow—even if it’s trying to convince you otherwise.
You May Not Need a Mask
If sleep apnea is diagnosed, treatment depends on the type, severity, and what may be contributing to it.
CPAP remains one of the most effective treatments for obstructive sleep apnea. It uses gentle air pressure to keep the airway open while you sleep. And yes, the idea of sleeping in a mask may sound about as appealing as wearing scuba equipment to bed, but today's machines and masks are considerably smaller and quieter than older versions.
But CPAP isn't the only option. Depending on the individual, treatment may also include weight loss when appropriate, changing sleep position, reducing alcohol close to bedtime, treating nasal obstruction, using a dental appliance that moves the jaw forward, or addressing specific anatomical problems affecting the airway. In fact, I’ve had many patients with deviated nasal septums, enlarged tonsils, and even chronic nasal congestion due to hidden allergens who saw their sleep apnea significantly improve—and sometimes resolve—once those problems were corrected.
The Bottom Line
If you're a woman over 40 who feels like gum on the bottom of a shoe—but your practitioner has no clue why—it’s time to consider possible sleep apnea. It’s more common than you think, irrespective of how many hours you spend in bed or how well you think you sleep.
And if weight loss is on your radar, good luck making any headway if sleep apnea is one of the reasons your scale is stuck. In many of my patients, stubborn weight gain was their only obvious symptom—and until their sleep apnea was corrected, the poundage stayed put.
I discuss sleep apnea, along with numerous other scale stallers in women over 40, throughout my Weight Loss After 40 book series. Learn more at www.weightlossafter40.com.