Your period has become unpredictable. You feel tired no matter how much you sleep. Your mood swings faster than it used to, the scale creeps up without any change in your habits, and your skin is breaking out like you are a teenager again. Are your hormones off?

Common signs of hormonal imbalance in women include irregular periods, fatigue, unexplained weight changes, mood changes, acne, sleep problems, and changes in sex drive. Hormones act as chemical messengers for almost every system in the body, so when one is out of range, the effects can show up in many places. But these same symptoms have plenty of other causes, so the only way to know for sure is to see a doctor.

What your hormones do

Hormones are chemicals made by glands such as the thyroid, ovaries, adrenal glands, and pituitary gland. They travel through your blood and tell organs what to do. They help control:

  • Your menstrual cycle and fertility
  • Metabolism and weight
  • Energy levels
  • Mood
  • Sleep
  • Blood sugar
  • Bone health

Because hormones do so much, an imbalance can show up in many ways. Cleveland Clinic notes that the signs depend on which hormone and which gland is involved.

Signs that can point to a hormone problem

Menstrual changes

Several hormones work together to run your cycle. An imbalance can cause periods that are irregular, much heavier or lighter than usual, or that stop.

Fatigue

Ongoing tiredness is one of the most common complaints. An underactive thyroid is a classic hormonal cause, but there are many others. Our guide on why you might feel tired all the time covers the most common ones.

Weight changes

Cleveland Clinic lists unexplained weight gain or weight loss among the signs. Thyroid problems are a frequent reason.

Mood changes

Anxiety, irritability, low mood, or depression can be linked to hormone shifts, especially around your period, after pregnancy, and during perimenopause.

Skin and hair changes

Acne can flare with hormone changes. Hair thinning or extra facial hair can be linked to higher levels of androgens (hormones such as testosterone).

Digestive changes

Cleveland Clinic also lists constipation or diarrhea and changes in heart rate among symptoms that can be tied to hormones affecting metabolism.

Sleep and libido

Trouble sleeping, night sweats, and lower interest in sex often show up during perimenopause and menopause.

What usually throws hormones off

Perimenopause and menopause

The years before your final period bring big swings in estrogen and progesterone. This stage can start in the mid-30s to mid-50s. Learn more in our guide to perimenopause symptoms.

Thyroid disorders

Too little thyroid hormone (hypothyroidism) can cause fatigue, weight gain, dry skin, and constipation. Too much (hyperthyroidism) can cause weight loss, anxiety, a racing heart, and tremors.

Polycystic ovary syndrome (PCOS)

PCOS involves higher androgen levels and often causes irregular periods, acne, and extra hair growth.

Pregnancy and after birth

Hormones change dramatically during pregnancy, after childbirth, and while breastfeeding.

Stress

Your body releases cortisol when you are under stress. Cortisol affects blood sugar, blood pressure, inflammation, and your sleep-wake cycle. Read more in our article on how to lower cortisol naturally.

Not every symptom is hormonal

Tiredness, weight changes, mood swings, and hair loss can come from many things besides hormones. Poor sleep, diet, stress, medicines, anemia, and other health conditions all cause similar symptoms. A Cleveland Clinic women’s health specialist has noted that symptoms like weight or hair changes are not always hormonal and can come from diet and lifestyle.

That is why self-diagnosing from a checklist, or from an ad, rarely works.

How doctors check for hormonal imbalance

A doctor will usually:

  1. Ask about your symptoms, cycle, medicines, and family history
  2. Do a physical exam
  3. Order blood tests, depending on your symptoms. These may check thyroid hormones, estrogen, progesterone, testosterone, cortisol, or blood sugar.
  4. In some cases, order imaging such as an ultrasound

Treatment depends on the cause. It may include medicine, hormone therapy, or lifestyle changes.

While you wait for answers

These habits support overall hormonal health:

  • Keep a symptom diary. Track your cycle, energy, mood, and sleep. It helps your doctor a lot.
  • Prioritize sleep. Aim for a regular bedtime and wake time.
  • Move most days. Regular activity helps mood, sleep, and weight.
  • Eat regular, balanced meals with protein, fiber, and healthy fats.
  • Manage stress in ways that work for you.

When to book an appointment

Make an appointment if:

  • Your periods change a lot, stop, or become very heavy
  • You have fatigue, weight changes, or mood changes that last more than a few weeks
  • You notice new hair growth on your face or body, or hair loss
  • You have trouble getting pregnant
  • You have hot flashes, night sweats, or sleep problems that affect your life

Seek care right away if you have a racing heart, chest pain, fainting, or thoughts of harming yourself.

Getting the right answer

Because the same symptoms have so many possible causes, guessing rarely works. Bring your symptom diary to your appointment, mention any medicines you take, and ask which tests make sense for you. A clear diagnosis is the first step toward the right treatment.

If one symptom stands out, our guides on constant tiredness and perimenopause go deeper.