Are you constantly tired and thirsty? Discover why your blood calcium might be high and what you can do about it!

Have you felt unusually tired lately? Do you have a nagging body ache or a thirst that will not go away no matter how much water you drink?

You might think these are just normal signs of a busy week. However, these everyday signs could point to a high calcium level in your blood. In medical terms, doctors call this condition hypercalcemia.

Do not panic. Most of the time, this condition is manageable and not right away dangerous. Let us explore everything you need to know about hypercalcemia in simple, easy-to-understand terms.

What Is Hypercalcemia in Simple Terms?

Hypercalcemia means your blood has too much calcium floating around in it. Sometimes the level is only slightly high. Other times, it rises greatly. For some people, this is a temporary issue that goes away. For others, it becomes a long-term medical condition.

You might wonder why high blood calcium is bad since calcium builds strong bones. It is true that most of your body's calcium lives in your bones. But your blood also needs a specific amount of calcium to function properly.

Here is why blood calcium matters to your body:

• Nervous system: Your nerves need calcium to send messages back and forth.
• Muscle movement: Calcium helps your muscles tighten and relax so you can move smoothly.
• Blood clotting: When you get a cut, calcium helps your blood form clots to stop the bleeding.
• Heart rhythm: Your heart relies on calcium to beat with a steady, normal rhythm.

Because these jobs are so vital, your body tightly controls your blood calcium levels. Two main hormones help with this balance: parathyroid hormone and calcitonin. Your body also needs vitamin D to absorb calcium from the food you eat.

The Difference Between Hypercalcemia and Hypocalcemia

These two medical words sound very similar, but they mean opposite things. In medical terms, the prefix "hyper" means high or above normal. The prefix "hypo" means low or below normal. Understanding the difference is quite straightforward.

Who Is Most Likely to Develop Hypercalcemia?

Hypercalcemia can affect anyone at any age. However, it appears most often in women over the age of 50. This increase often happens after menopause. In most of these cases, the root cause is a small overactive gland in the neck.

Global health data shows that about 1% to 2% of the general population has high calcium levels. Among those cases, about 90% stem from a parathyroid gland problem or an underlying cancer. Knowing your risk helps you spot early warning signs.

Is Hypercalcemia Dangerous or Life-Threatening?

However, if your calcium level climbs very high, it can cause severe health problems. This extreme state requires emergency medical treatment right away. Severe hypercalcemia can lead to:

• Kidney failure .
• Dangerous irregular heartbeats .
• Confusion and severe drowsiness .
• Coma in extreme cases .

While mild cases are not cause for panic, you should never ignore a high calcium test result.

Common and Warning Signs of Hypercalcemia

As mentioned before, many people have no symptoms at all when their calcium is only slightly high. If your calcium stays high for a long time or rises sharply, your body will start sending warning signals.

Why Does Blood Calcium Rise? Causes of Hypercalcemia

Many different factors can cause high blood calcium. Certain medical conditions, prescription medicines, and dehydration play major roles. Yet, two primary causes stand out above all others.

1. Overactive Parathyroid Glands (Primary Hyperparathyroidism)

Imagine your body has four tiny managers that control your calcium levels. These four glands sit in your neck right behind your thyroid gland. Doctors call them the parathyroid glands. Their main job is making parathyroid hormone to keep your blood calcium balanced.

If one or more of these glands becomes enlarged and makes too much hormone, your blood gets flooded with excess calcium. This condition is the single most common cause of hypercalcemia.

2. Underlying Cancers and Malignancies

Certain types of cancer can cause your blood calcium levels to spike. Doctors refer to this as hypercalcemia of malignancy. This type often develops quickly and can become quite serious. Cancers linked to high calcium include:

• Lung cancer .
• Breast cancer .
• Multiple myeloma, a cancer of white blood cells .
• Kidney cancer .
• Leukemia and lymphoma .
• Rare muscle tissue cancers .

3. Certain Medicines and Supplements

The everyday medicines and vitamins you take can sometimes push your calcium levels up.

• Thiazide diuretics: Water pills given for high blood pressure can reduce calcium loss in urine.
• Lithium: A medicine often prescribed for certain mental health conditions.
• Vitamins: Taking too much vitamin D or vitamin A over a long period.
• Antacids: Taking too many calcium-based stomach chewable tablets for heartburn.

4. Other Rare Medical Conditions

Several less common medical issues can also disrupt your body's calcium balance.

• Inflammatory lung diseases like sarcoidosis and tuberculosis.
• Severe kidney failure.
• An overactive thyroid gland.
• Staying confined to a bed for many weeks without moving.
• Bone disorders such as Paget's disease.

How Doctors Diagnose Hypercalcemia

Doctors usually find hypercalcemia during routine blood tests ordered for other health checks. Standard blood panels like a Complete Metabolic Panel measure your blood calcium easily. This allows doctors to spot the problem before symptoms even start.

Doctors classify the severity of hypercalcemia based on lab numbers measured in milligrams per deciliter (mg/dL):

Once your doctor sees a high result, they will review your medicines and family health history. If the cause remains unclear, they may refer you to an endocrinologist, a hormone specialist. Further diagnostic tests may include:

• Blood tests to check your parathyroid hormone levels.
• Vitamin D blood tests.
• Urine tests to measure calcium excretion.
• Neck ultrasounds or CT scans to check your parathyroid glands.

Treatment Options for Hypercalcemia

Treatment depends entirely on what caused the high calcium and how severe your condition is.

Treating Mild Hypercalcemia

If your calcium level is only slightly elevated, your doctor may suggest simple steps:

• Drink plenty of water: Staying well-hydrated helps your kidneys flush extra calcium out in your urine.
• Review your medicines: If a blood pressure pill raises your calcium, your doctor can switch you to a safer alternative.
• Stop certain supplements: You may need to stop taking calcium pills, vitamin D, or calcium-rich antacids.

Targeted Treatments Based on Cause

• Parathyroid gland issues: Surgeons can often remove the single overactive gland to cure the problem permanently.
• Cancer-related causes: Doctors use specialized medicines like bisphosphonates or denosumab to lower bone calcium release.

Managing Severe Hypercalcemia and Crisis

If your calcium level is dangerously high or you feel very sick, you will need hospital care. Doctors will give you IV fluids through a vein to rehydrate your body quickly. They may also give you specific medicines to drop your calcium levels fast and prevent dangerous complications.

Potential Complications of Untreated High Calcium

Because doctors catch high calcium early through blood work, long-term complications are rare. However, if left untreated for a long time, high calcium can damage your body:

• Calcium deposits in your kidneys that weaken kidney function.
• Painful kidney stones.
• High blood pressure.
• Lasting mental fatigue or depression.
• Weakened bones, osteoporosis, and easy bone fractures.

Can You Prevent It? When to See a Doctor

You cannot prevent every cause of hypercalcemia. Even so, you can avoid self-treating with random vitamin supplements. Never take high doses of calcium or vitamin D without medical guidance.

Make sure to talk with your doctor if:

• Your family has a history of kidney stones or parathyroid disorders.
• You notice persistent symptoms like extreme thirst, frequent bathroom trips, or bone pain.

Discovering a new health issue can feel scary. Keep in mind that hypercalcemia is treatable. Once your doctor returns your calcium to a normal level, your symptoms will fade. Do not hesitate to ask your doctor any questions you have.