Are My Hormones Causing Poor Sleep, Mood Changes, and Weight Gain?

Quick Answer: Could Poor Sleep, Mood Changes, and Weight Gain Be Hormonal?

Yes, they can be.

Changes in reproductive and thyroid hormones can contribute to symptoms involving:

Sleep
Fatigue
Mood
Motivation
Body composition
Weight distribution
Libido
Muscle mass
Temperature regulation
Menstrual patterns

But none of those symptoms proves that a hormone problem is present.

For example, the Endocrine Society emphasizes that symptoms such as low energy and low mood in men have many possible causes. Testosterone deficiency should be diagnosed only when compatible symptoms occur alongside consistently and unequivocally low testosterone levels.

Similarly, the American Thyroid Association notes that fatigue, depressed mood, and other symptoms of hypothyroidism overlap with many other conditions, and laboratory testing is needed to establish whether thyroid hormone levels are actually abnormal.

So symptoms can provide a reason to investigate.

They are not the diagnosis.

Watch: Dr. John Dame Explains 3 Signs Your Hormones Might Be Changing

Video Transcript

Dr. John Dame:

I’m a doctor, and I’m going to explain to you three signs that your hormones might be out of balance.

The first one that people often recognize is a change in their sleep.

Hormones affect our regulation of how we sleep, and when those start to shift and change over time, we might feel really, really tired but not be able to sleep.

The second thing is mood.

Hormones affect how we feel, and they affect our energy levels. As those decrease over time as we age, oftentimes people notice they don’t feel as happy or as energetic.

The last thing that people often notice is weight changes.

They start getting pudgy in areas they weren’t pudgy before. They’re unable to lose weight as easily.

That’s definitely something we can look at and help you fix, and it’s likely directly related to hormone changes.

So come in. Let’s talk about it.

Important Context About the Video

Sleep disruption, mood changes, fatigue, and changing body composition can occur alongside hormonal changes.

That relationship is particularly well documented during the menopause transition. Research has identified changes in sleep, mood, fat distribution, and lean mass during midlife, although aging, lifestyle, sleep, physical activity, and metabolic health contribute as well.

The same caution applies to men.

Low testosterone can affect sexual function, body composition, and well-being in men with true hypogonadism. But the Endocrine Society specifically cautions that low mood and energy are nonspecific and that obesity, medications, illness, and other potentially reversible factors should be considered before attributing symptoms to testosterone.

So we would soften one part of the video when translating it into written medical guidance:

Weight changes are not necessarily “directly” caused by hormones. Hormones may be one contributor within a much bigger picture.

1. Why Symptoms Alone Cannot Diagnose a Hormone Problem

Imagine two patients who both say:

“I’m exhausted, gaining weight, and don’t feel like myself anymore.”

Those patients could have completely different underlying causes.

One might be entering perimenopause.

Another could have hypothyroidism.

Another might have sleep apnea.

Another might be sleeping five hours a night because of stress.

Another may have depression.

Another might have low testosterone associated with obesity or medication use.

Another may simply be experiencing changes in activity, muscle mass, nutrition, or sleep as they age.

That is why the phrase “hormone imbalance” should be treated as the beginning of an investigation, not a diagnosis.

2. Hormones and Sleep

Sleep and hormonal function have a two-way relationship.

Hormonal changes can affect sleep, and inadequate sleep can influence multiple metabolic and endocrine systems.

Women

Sleep disturbance becomes particularly common during the menopausal transition.

Potential contributors include:

Hot flashes
Night sweats
Changing reproductive hormones
Mood symptoms
Changes in circadian rhythm
Sleep apnea
Restless legs
Stress and other psychosocial factors

Current research emphasizes that reproductive hormone changes can contribute to menopause-related sleep problems, but they do not explain every case of insomnia.

The Menopause Society notes that hormone therapy can be particularly useful when sleep disturbance occurs alongside bothersome hot flashes or night sweats.

That distinction matters.

Hormone therapy is not simply a universal sleep medication.

A randomized trial of postmenopausal women with insomnia but without significant vasomotor symptoms found that estrogen did not significantly improve sleep efficiency compared with placebo.

Men

Sleep problems in men are not automatically a sign of low testosterone either.

In fact, conditions such as untreated severe obstructive sleep apnea are important considerations before testosterone therapy. The Endocrine Society lists untreated severe sleep apnea among conditions where initiating testosterone therapy is not recommended.

This is why:

“I’m tired and sleeping badly” does not automatically equal “I need testosterone.”

3. Hormones and Mood

Hormonal changes can influence how someone feels emotionally, but this relationship is complicated.

During perimenopause, fluctuations in estrogen occur during a life stage in which many women also experience:

Sleep disruption
Hot flashes
Stress
Changes in relationships
Caregiving responsibilities
Physical changes
Other health concerns

Mood changes, anxiety, irritability, and brain fog are commonly reported during the menopause transition. Researchers continue to study the interaction between hormonal fluctuation, sleep, vasomotor symptoms, and psychosocial factors.

In men, low testosterone may also be associated with changes in mood or well-being when true hypogonadism is present.

But expectations need to remain realistic.

In the large Testosterone Trials, testosterone treatment slightly improved mood and depressive symptoms among older men with low testosterone, but it did not significantly improve vitality or energy on the trial’s primary vitality measure.

That is a good example of why hormone therapy should not be advertised as:

“Take this and you’ll automatically feel happier and more energetic.”

Mental-health symptoms deserve appropriate evaluation regardless of someone’s hormone levels.

4. Hormones and Weight and Body Composition

This is probably the symptom patients find most frustrating.

Someone may say:

“I haven’t changed what I’m doing, but suddenly everything is going to my stomach.”

There can be some hormonal biology behind that experience.

But weight and body composition are not the same thing.

Menopause and Body Composition

Longitudinal data from the Study of Women’s Health Across the Nation found that during the menopause transition, the rate of fat gain increased while lean mass declined.

Interestingly, overall body weight had already been increasing with age and did not show the same menopause-specific acceleration.

In other words:

Menopause appears particularly relevant to how body composition and fat distribution change, but aging itself also influences total weight.

More recent research continues to describe an increase in visceral fat and reduction in lean tissue across the menopausal transition while recognizing that hormones, aging, energy balance, sleep, and lifestyle interact.

That helps explain why someone can feel like:

Her waist is changing
Muscle is harder to maintain
The scale behaves differently
The same routine produces different results

without estrogen being the only explanation.

Testosterone and Body Composition

Testosterone also has important relationships with lean mass and fat mass.

Randomized trials of men with low testosterone have demonstrated increases in lean mass and decreases in fat mass during testosterone treatment.

But testosterone is not a general weight-loss medication.

And there is another important relationship:

Obesity itself can contribute to lower testosterone.

In its July 2026 statement, the Endocrine Society specifically emphasized that when a man has low testosterone associated with overweight or obesity and no other identified cause, weight loss is typically the first-line approach.

That means sometimes the relationship is the opposite of what patients assume.

It is not always:

Low testosterone → weight gain.

It can also involve:

Excess weight and metabolic factors → lower testosterone.

5. What About Perimenopause and Menopause?

For women in their 40s and 50s, several symptoms appearing together can make the menopause transition an important consideration.

Common concerns may include:

Changing menstrual cycles
Hot flashes
Night sweats
Sleep disruption
Mood changes
Vaginal dryness
Sexual changes
Body-composition changes

Sleep, mood, and cognitive complaints are all recognized during the menopause transition.

Hormone therapy can be an appropriate option for certain women, particularly for bothersome vasomotor symptoms and other established menopause indications.

The Menopause Society identifies hormone therapy as the most effective treatment for menopausal hot flashes and notes that it can help associated sleep disturbances in appropriately selected patients.

Is Hormone Therapy a Weight-Loss Treatment?

No.

The Menopause Society specifically notes that hormone therapy is not associated with causing weight gain, but it is also not prescribed simply as a weight-loss medication.

If weight management is the primary concern, the evaluation should include metabolic health, nutrition, resistance training, sleep, medication use, and other potential contributors.

6. What About Low Testosterone in Men?

One of the biggest mistakes in modern hormone marketing is assuming that every tired man over 40 has “Low T.”

Symptoms associated with testosterone deficiency can include changes involving:

Sexual desire
Erectile function
Muscle mass
Body composition
Energy
Mood

But these symptoms overlap with many other conditions.

The Endocrine Society’s current guidance is very clear:

A diagnosis of male hypogonadism requires both compatible symptoms and consistently low, accurately measured testosterone concentrations.

Testing generally includes confirmation rather than relying on one isolated value.

The clinician should also consider why testosterone is low.

Possible contributors can include:

Testicular disease
Pituitary or hypothalamic disorders
Obesity
Certain medications
Chronic illness
Other medical conditions

So the goal should not simply be:

“Get testosterone as high as possible.”

The goal is to determine whether true testosterone deficiency exists and whether treatment is appropriate.

7. Could It Be Your Thyroid?

The thyroid is easy to forget during conversations centered on estrogen and testosterone.

But thyroid hormones help regulate metabolism and energy use throughout the body.

Hypothyroidism can cause symptoms including:

Fatigue
Feeling cold
Dry skin
Constipation
Depressed mood
Memory difficulties

Weight changes may also occur.

The challenge is that these symptoms overlap with:

Menopause
Depression
Sleep deprivation
Medication effects
Other medical problems

The American Thyroid Association therefore emphasizes that symptoms alone cannot diagnose hypothyroidism.

Blood testing is needed.

This is another reason a hormone evaluation should not mean checking only estrogen or testosterone.

8. What Else Can Look Like a Hormone Imbalance?

Before deciding hormones are the cause, it may be appropriate to consider other possibilities.

Depending on the patient, these may include:

Sleep Disorders

Sleep apnea and chronic insomnia can cause:

Fatigue
Brain fog
Mood changes
Difficulty with weight management

Mental Health

Depression and anxiety can significantly affect:

Sleep
Motivation
Energy
Appetite
Weight
Concentration

Medication Effects

Some medications can influence:

Weight
Sleep
Sexual function
Mood
Hormone levels

Nutritional Issues

Iron deficiency and other nutritional problems can contribute to fatigue and poor function.

Metabolic Health

Insulin resistance, diabetes, obesity, and changes in activity or muscle mass may affect both weight and endocrine health.

Lifestyle Changes

Stress, poor sleep, alcohol intake, reduced exercise, and changes in food intake can quietly accumulate over time.

The answer can also be:

more than one thing at once.

A woman entering perimenopause can still have hypothyroidism.

A man with low testosterone can still have sleep apnea.

A patient with hormone changes can also have depression.

Good medicine does not force every symptom into one explanation.

9. What Should a Hormone Evaluation Include?

There is no single “hormone panel” that makes sense for every patient.

The evaluation should begin with the person, not the laboratory order.

At The Re/ Clinic, hormone balance services are available for both men and women.

A medical evaluation may consider:

Symptoms

When did they begin?

Are they constant or changing?

Did several symptoms appear around the same time?

Age and Life Stage

A 27-year-old with absent periods requires a different evaluation from a 49-year-old with hot flashes and changing menstrual cycles.

Medical History

Relevant factors can include:

Thyroid disease
Diabetes
Cardiovascular disease
Reproductive history
Pituitary disease
Previous surgery
Cancer history
Sleep disorders

Medications and Supplements

Medications can affect both symptoms and hormone measurements.

Menstrual and Reproductive History

For women, changes in cycle timing and bleeding patterns can be especially important.

Sexual Symptoms

Changes in libido, erections, vaginal comfort, or sexual function can provide additional information.

Laboratory Testing

Testing should be selected based on the clinical question.

Depending on the patient, evaluation may involve hormones such as:

Testosterone
Thyroid hormones
Estradiol
Other reproductive or pituitary hormones

along with other laboratory testing when medically appropriate.

The key is not ordering the largest possible panel.

It is knowing what question each test is supposed to answer.

10. Does a Hormone Problem Automatically Mean BHRT?

No.

The treatment should depend on:

Which hormone is abnormal
Why it is abnormal
Symptoms
Age
Sex
Medical history
Risks
Treatment goals

For example:

A man with confirmed pathological hypogonadism

may be a candidate for testosterone replacement after discussing risks, benefits, fertility, contraindications, and monitoring.

A woman with bothersome menopausal symptoms

may be an appropriate candidate for menopausal hormone therapy depending on her individual medical history and risk profile.

Someone with hypothyroidism

requires thyroid-specific evaluation and treatment rather than simply adding sex hormones.

Someone whose symptoms are primarily driven by poor sleep, medication effects, or metabolic health

may need a completely different approach.

Hormone optimization should therefore not mean:

“You have symptoms, so here’s hormones.”

It should mean:

“Let’s determine what is actually changing and decide whether treatment makes sense.”

Frequently Asked Questions

Can hormone imbalance cause insomnia?

Hormonal changes can contribute to sleep problems.

This is especially well recognized during perimenopause and menopause, when vasomotor symptoms and reproductive hormone changes may affect sleep.

However, insomnia has many other possible causes.

Can hormone imbalance cause mood swings?

Hormonal fluctuation can contribute to changes in mood, particularly during reproductive transitions such as perimenopause.

Stress, poor sleep, depression, anxiety, medications, and other factors can produce similar symptoms.

Can hormone imbalance cause weight gain?

Hormonal conditions can affect body weight and body composition.

During menopause, research has shown changes in fat distribution and lean mass, but aging and lifestyle also contribute.

Weight gain alone cannot diagnose a hormone problem.

Why am I gaining weight around my stomach as I age?

Changes in body-fat distribution are common during midlife.

Women may experience increased central or visceral fat during the menopause transition, while changes in muscle mass, activity, sleep, diet, and metabolic health can also contribute.

Does low testosterone cause weight gain?

Low testosterone and increased body fat can occur together, but the relationship goes both directions.

Obesity itself can lower testosterone, which is why the Endocrine Society recommends addressing excess weight as a first-line strategy in some men with obesity-associated low testosterone.

Can low testosterone cause depression?

Low testosterone may be associated with mood symptoms in some men, but depression has many causes.

Clinical trials have shown modest improvements in mood with testosterone in appropriately selected men with low levels, rather than a universal antidepressant effect.

Can menopause cause sleep problems?

Yes.

Sleep disturbances become more common during the menopause transition and may be related to hot flashes, night sweats, reproductive hormone changes, and other biopsychosocial factors.

Will hormone replacement help me lose weight?

Hormone therapy should not be prescribed simply as a weight-loss treatment.

It may influence body composition in certain hormone-deficient patients, but weight management usually involves multiple factors.

How do I know if my symptoms are hormonal?

You cannot reliably determine it from symptoms alone.

A medical evaluation considers your symptoms, age, history, medications, life stage, examination, and appropriate laboratory testing.

Should I get my hormones checked if I feel tired all the time?

Persistent unexplained fatigue deserves evaluation.

Hormonal conditions are one possible cause, but sleep problems, anemia, mental-health conditions, medication effects, nutritional deficiencies, chronic disease, and other issues may also need to be considered.

Stop Guessing About Why You Feel Different

Poor sleep.

Mood changes.

Lower energy.

A body that suddenly seems to respond differently than it used to.

Those changes can be real without automatically meaning one specific hormone is responsible.

The goal of a hormone evaluation should be to separate possible hormonal symptoms from other conditions that can look almost identical.

At The Re/ Clinic in Sandy, Utah, we offer hormone balance services for men and women, including individualized hormone evaluation and hormone replacement therapy when medically appropriate.

If your sleep, mood, energy, weight, libido, or overall sense of well-being has changed and you are not sure why, start with an evaluation rather than guessing.

Schedule a hormone consultation with The Re/ Clinic.

Call: 385-240-1000
Location: 9035 S 700 E, Sandy, UT 84070

References

Endocrine Society. Statement on Testosterone Replacement Therapy. July 16, 2026. Current guidance emphasizes that symptoms alone do not establish testosterone deficiency and that men should have compatible symptoms plus consistently low laboratory values before diagnosis.
Bhasin S, Brito JP, Cunningham GR, et al. Testosterone Therapy in Men With Hypogonadism: An Endocrine Society Clinical Practice Guideline. Journal of Clinical Endocrinology & Metabolism. 2018.
Greendale GA, Sternfeld B, Huang M, et al. Changes in body composition and weight during the menopause transition. JCI Insight. 2019. Longitudinal SWAN data demonstrating changes in fat and lean mass across menopause.
Juppi HK, Karppinen JE, Laakkonen EK. Menopause and Body Composition: A Complex Field. Seminars in Reproductive Medicine. 2025. Review of changes in adipose tissue, muscle, aging, hormones, and metabolic health around menopause.
Kagan R, et al. A Review of Cognitive, Sleep, and Mood Changes in the Menopausal Transition: Beyond Vasomotor Symptoms. Obstetrics & Gynecology. 2025.
The Menopause Society. Hormone Therapy. Current patient and professional information regarding hormone therapy, vasomotor symptoms, sleep, and weight during menopause.
Snyder PJ, Bhasin S, Cunningham GR, et al. Lessons From the Testosterone Trials. Endocrine Reviews. 2018. Review of randomized Testosterone Trials examining sexual function, physical function, vitality, mood, and other outcomes.
American Thyroid Association. Adult Hypothyroidism. Current information regarding hypothyroidism, overlapping symptoms, and the importance of laboratory diagnosis.