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Published on: 2/10/2026

Why Am I So Sleepy During the Day? 5 Causes for Women 65+

There are several factors to consider. In women 65+, the most common causes of daytime sleepiness are age-related changes that reduce deep, refreshing sleep; sleep apnea; side effects from medicines; health conditions like anemia, thyroid problems, diabetes, heart or kidney disease, and depression; and reduced daytime activity or light exposure. Important red flags, what to try at home, and when to see a doctor including how to screen for sleep apnea, adjust routines, and review medications are covered below and can shape the right next steps for your care.

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Explanation

Why Am I So Sleepy During the Day? 5 Causes for Women 65+

If you've been asking yourself, "why am I so sleepy during the day?", you're not alone. Many women age 65 and older notice changes in their energy levels—even when they believe they're getting enough sleep at night. Daytime sleepiness is common, but it is not something to ignore, especially as we age.

Sleepiness during the day can affect memory, mood, balance, and overall quality of life. In some cases, it can also point to medical issues that deserve attention. Below are five common, medically recognized causes of daytime sleepiness in women 65+, explained clearly and calmly—without minimizing what matters.


1. Changes in Sleep Quality With Aging

As we get older, sleep naturally changes. Research from the National Institute on Aging shows that older adults often experience:

  • Lighter sleep
  • More frequent nighttime awakenings
  • Less deep, restorative sleep
  • Earlier wake times

Even if you spend 7–8 hours in bed, your sleep may not be as refreshing as it once was.

Why this matters

Poor sleep quality can leave you feeling:

  • Groggy in the morning
  • Low-energy throughout the day
  • Needing frequent naps

What may help

  • Keeping a consistent sleep and wake schedule
  • Getting morning sunlight
  • Avoiding caffeine late in the day
  • Talking with a doctor if nighttime awakenings are frequent or disruptive

2. Sleep Apnea (Often Missed in Older Women)

One of the most common and underdiagnosed reasons women ask, "why am I so sleepy during the day?" is sleep apnea.

Sleep apnea causes breathing to stop and start during sleep—often without the person realizing it. While commonly associated with men, postmenopausal women are at increased risk, especially after age 65.

Common signs in women include:

  • Daytime sleepiness or fatigue
  • Morning headaches
  • Dry mouth upon waking
  • Mood changes or irritability
  • Trouble concentrating

Snoring may or may not be present.

Because sleep apnea increases the risk of heart disease, stroke, diabetes, and falls, it's important to take symptoms seriously. If you're experiencing unexplained daytime fatigue along with any of these symptoms, you can quickly check whether Sleep Apnea Syndrome might be contributing to your sleepiness using a free, AI-powered symptom checker designed to help identify potential causes.

If symptoms are present, speak to a doctor promptly, as sleep apnea is treatable and early care can make a meaningful difference.


3. Medications and Their Side Effects

Many women over 65 take medications to manage chronic conditions. According to data from the U.S. Food and Drug Administration and geriatric medicine studies, medication-related drowsiness is a leading cause of daytime sleepiness.

Medications commonly linked to sleepiness include:

  • Blood pressure medicines
  • Anxiety or depression medications
  • Pain relievers (including opioids)
  • Allergy medications (especially older antihistamines)
  • Sleep aids taken too late or too often

Why this matters

As we age, the body processes medications more slowly, which can increase side effects even at standard doses.

What to do

  • Do not stop medications on your own
  • Ask your doctor or pharmacist to review your medication list
  • Ask whether timing or dosage changes could reduce daytime drowsiness

4. Medical Conditions That Cause Fatigue

Several common medical conditions become more frequent after age 65 and can cause ongoing sleepiness during the day.

Conditions often involved:

  • Anemia (low red blood cell count)
  • Thyroid disorders
  • Diabetes
  • Heart disease
  • Chronic kidney disease
  • Depression, which may appear as fatigue rather than sadness in older adults

These conditions can reduce oxygen delivery, alter metabolism, or disrupt sleep cycles—leading to persistent tiredness.

Important note

Daytime sleepiness caused by an underlying illness will not improve with more naps alone. If sleepiness is new, worsening, or affecting daily activities, it's important to speak to a doctor and ask whether blood tests or evaluations are appropriate.


5. Reduced Daytime Activity and Light Exposure

Another overlooked reason women ask, "why am I so sleepy during the day?" is reduced activity.

Retirement, limited mobility, or chronic pain may lead to:

  • Less physical movement
  • Fewer social interactions
  • Limited exposure to daylight

Why this matters

Daylight and movement help regulate your circadian rhythm—your internal sleep-wake clock. Without them, your body may not clearly distinguish day from night.

Helpful steps

  • Aim for light physical activity daily (walking, stretching, chair exercises)
  • Spend time outdoors or near natural light
  • Avoid long afternoon naps (keep naps under 30 minutes if needed)

These changes can gently improve alertness without medications.


When Daytime Sleepiness Could Be Serious

While many causes are manageable, some should never be ignored. Speak to a doctor promptly if daytime sleepiness is accompanied by:

  • Sudden confusion or memory changes
  • Shortness of breath
  • Chest discomfort
  • Frequent falls or balance problems
  • Falling asleep while driving or during conversations

These symptoms may signal conditions that require urgent medical care.


What You Can Do Next

If you're wondering why am I so sleepy during the day, start by observing patterns:

  • How many hours do you sleep?
  • Do you wake feeling rested?
  • Are naps helping or making things worse?
  • Have medications or health conditions changed recently?

Consider keeping a short sleep diary and bring it to your next medical appointment.

If you suspect your sleep quality may be disrupted by nighttime breathing issues, using a free Sleep Apnea Syndrome symptom checker can help you determine whether this condition might be worth discussing with your healthcare provider.


The Bottom Line

Daytime sleepiness is common in women 65+, but it is not something you have to live with. Causes range from normal aging changes to sleep disorders, medications, and medical conditions—some of which can be serious if left untreated.

Being informed is the first step. The next step is simple but essential: speak to a doctor about ongoing or worsening sleepiness, especially if it affects your safety, independence, or quality of life.

Good sleep supports healthy aging—and you deserve to feel awake, steady, and present during the day.

(References)

  • * Jehan S, Zizi F, Pandi-Perumal SR, Myers D, Borjali A, McFarlane SI, Perelman S. Sex Differences in Obstructive Sleep Apnea: A Narrative Review. Sleep Breath. 2021 Mar;25(1):319-335. doi: 10.1007/s11325-020-02206-3. Epub 2020 Nov 23. PMID: 33226462.

  • * Sweed H, Cates ME, Ancoli-Israel S. Chronic Insomnia in Older Adults: Current and Future Perspectives. Curr Sleep Med Rep. 2015 Mar;1(1):50-58. doi: 10.1007/s40675-015-0008-0. Epub 2015 Jan 13. PMID: 25750860; PMCID: PMC4350027.

  • * Manconi M, Cicolin A, De Luca C, De Gennaro L, Fantini ML, Ferri R, Incisa Della Rocchetta E, Liguori C, Mecocci P, Miano S, Novelli L, Provini F, Ruta P, Stefani A, Strambi LF, Turi M, Zucconi M, D'Urso R. Restless legs syndrome in older adults: An updated review. J Gerontol A Biol Sci Med Sci. 2021 Jan 1;76(1):164-173. doi: 10.1093/gerona/glaa149. PMID: 32677934.

  • * Gildner TR, Zeller M, Gaskins J. Polypharmacy and Excessive Daytime Sleepiness in Community-Dwelling Older Adults: Results from the Health, Aging, and Body Composition Study. Sleep Med. 2021 May;81:282-287. doi: 10.1016/j.sleep.2021.02.043. Epub 2021 Mar 5. PMID: 33744577; PMCID: PMC8130761.

  • * Roberts R, Foley D, Ancoli-Israel S, Chen-Edinboro L, Yaffe K. Depression and Sleep in Older Adults: A Systematic Review and Meta-Analysis. Sleep. 2018 Feb 1;41(2):zsy003. doi: 10.1093/sleep/zsy003. PMID: 29401340; PMCID: PMC5987177.

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