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HomeExclusiveCan Underactive Thyroid Affect Blood Pressure

Can Underactive Thyroid Affect Blood Pressure

Effects Of Thyroid Hormone On Your Blood Pressure

How Thyroid Medication Changes your Blood Pressure

When you are hypothyroid you may need to take thyroid medication.

These medications contain thyroid hormones and are meant to supplement whatever thyroid hormone your body can produce naturally.

If your body can only produce 80% of whatever is normal thyroid hormone for you, then we try to give you back that other 20% so you can get as close to 100% as possible.

The problem is that sometimes you can actually get more than you need.

Imagine if your body produces 80% but we give you back 40%.

All of a sudden your body is getting 120% of whatever is considered “normal” for you.

This is when side effects such as heart palpitations and elevated blood pressure tend to kick in .

As you take too much thyroid medication your heart may start to beat faster and harder which results in an increase in blood pressure.

This effect is regulated through calcium channel pumps found on your cardiac cells .

The more thyroid hormone that you take the more these pumps will work, the higher your blood pressure will go, and the more symptomatic you may become.

The good news is that you can relatively easily modify your dose of thyroid medication to fix this problem.

Circulatory And Cardiovascular Systems

Hypothyroidism slows your heart rate and weakens your heartbeat, making your heart less efficient at pumping blood out to your body. This can make you short of breath when you exercise. By narrowing your arteries, this condition can also raise blood pressure.

Hypothyroidism can lead to high cholesterol. Together, high blood pressure and high cholesterol can increase your risk for heart disease.

Treating Insulin Resistance If You Have Hypothyroidism

So, what are you supposed to do if you have high blood sugar and hypothyroidism and you want to treat it?

What if you want to treat insulin resistance to help you lose weight?

There are several strategies that you can take and Ive listed several below:

As you consider these therapies just keep in mind that the more therapies you add on top of each other the more likely you are to see your desired results.

That means youll want to simultaneously change your diet, take the right supplements, adjust your thyroid medication, exercise sufficiently, and consider other medications to normalize your weight and blood sugar.

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Causes Of An Underactive Thyroid

An underactive thyroid is when your thyroid gland doesnât produce enough of the hormone thyroxine .

Most cases of an underactive thyroid are caused by the immune system attacking the thyroid gland and damaging it, or by damage that occurs as a result of treatments for thyroid cancer or an overactive thyroid.

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Are Certain Cats More Likely To Get High Blood Pressure


In humans, hypertension is related to several factors, including a stressful lifestyle. Although not all causes of feline hypertension have been identified, stress does not appear to play a role in the development of this disorder in cats.

Hypertension is more common in older cats, especially overweight or obese cats.

However, kidney, thyroid, and heart disease are the most common causes of feline hypertension and will be described in detail. Hypertension is more common in older cats, especially overweight or obese cats.

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Thyroid Problems And Blood Pressure Connection

Thyroid problems and blood pressure connection

Blood pressure can be affected by many factors. Thyroid hormone imbalances affect blood pressure greatly. In my previous post, I had talked about body temperature being indicative of thyroid dysfunction. Blood pressure is also a strong indicator of thyroid function for people with thyroid hormonal imbalances. It is important to observe body signals as they are number one indicators that something is not right with thyroid hormones for people with thyroid issues.

Normal blood pressure is around 120 and 80 , 120/80.

High blood pressure is 140/90 or above.

The operating centre for blood pressure is present in the brain stem where signals from the body are processed. Blood pressure system is regulated by renin- angiotensin- aldosterone system and by sympathetic nerves and hormones adrenaline and noradrenaline.

While, there are many factors which can influence blood pressure, I will concentrate on thyroid dysfunction specifically in this post. Both the sympathetic and hormonal systems are deregulated in thyroid dysfunction. It has been suggested in scientific literature that there is a disconnection in the renin-angiotensin-aldosterone system in both hyperthyroidism and hypothyroidism as the functioning of kidneys is affected. Thyroid and renal function are interrelated.


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Hyperthyroidism: Excess Thyroid Hormone

The opposite problem, hyperthyroidism, or too much thyroid hormone, is far less common, affecting less than 1% of the population. But it, too, can harm the heart.

The classic symptoms include sleeplessness, heat intolerance, excess sweating, weight loss, extreme hunger, and loose bowels. Excess thyroid hormone also causes the heart to beat harder and faster and may trigger abnormal heart rhythms. One is atrial fibrillation, a disorganized rhythm in the heart’s upper chambers. A related symptom is palpitations, a sudden awareness of your heartbeat. People with hyperthyroidism may also have high blood pressure. In a person with clogged, stiff heart arteries, the combination of a forceful heartbeat and elevated blood pressure may lead to chest pain or angina.

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What Are The Signs And Symptoms Of Hypothyroidism

Symptoms of hypothyroidism develop slowly, often over several years. At first, you may feel tired and sluggish. Later, you may develop other signs and symptoms of a slowed-down metabolism, including:

  • Feeling cold when other people do not
  • Constipation
  • A hoarse voice
  • More than usual menstrual bleeding

You also may have high LDL or “bad” cholesterol, which can raise your risk for .

Taking Blood Pressure Medications

HBP 014- How is Hyperthyroidism or Hypothyroidism linked to High Blood Pressure

It’s also entirely possible that you may suffer from high blood pressure from an unrelated cause!

The people I am talking to in this article are those who have normal blood pressure before they start taking thyroid medication and then suddenly experience high blood pressure.

If you have high blood pressure at baseline and then it stays high after taking thyroid medication then you probably just have high blood pressure from some other cause.

What’s important here is that some blood pressure medications can interfere with your thyroid function.

Medications like beta-blockers can slow down thyroid peripheral conversion which may make your thyroid medication slightly less efficient.

This can be a good and a bad thing.

If you find that you are incredibly sensitive to heart palpitations from your thyroid medication then using beta blockers may be the only way you can use thyroid medication without experiencing heart palpitations.

But, on the other hand, taking a beta-blocker for blood pressure can negatively impact your thyroid function and potentially make you feel worse.

The moral of the story is to try and AVOID taking blood pressure medications if you have thyroid disease on any type.

This means you will need to focus on the underlying cause of your elevated blood pressure instead of trying to cover it up with anti-hypertensives.

One of the major causes of high blood pressure is insulin resistance and obesity .

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Hypothyroidism And High Blood Pressure

May 8, 2020

There is a direct link between hypothyroidism and high blood pressure. On my last post I discussed how ARBs can cause hypothyroidism or hide a hypothyroid condition. In this post I will cover how Calcium Channel Blockers can cause Drug Induced Hypothyroidism.

Calcium is needed for the production of Hydrogen Peroxide. Hydrogen peroxide is a key element in thyroid hormone biosynthesis. It is the substrate used by thyroid peroxidase for oxidation and incorporation of iodine into thyroglobulin, a process known as organification.

Without sufficient calcium within the thyroid gland, thyroid hormone production is reduced resulting in Drug Induced Hypothyroidism.

If you are taking a Calcium Channel Blocker and an Angiotensin Receptor Blocker at the same time it could be double trouble. The CCB inhibits thyroid hormone production which should cause TSH to rise. But as I discussed in part 1, ARBs suppress TSH production, lower TSH levels keeping them within normal lab range.

Since most doctors run a TSH with reflex to fT4 test, if TSH is within lab range, fT4 will not be run and your hypothyroid condition will be hidden.

Need help with your Thyroid condition? Schedule a Complimentary Discovery call today by click this link: Discovery Call

Related Content

Avoid Gluten In Your Diet

Gluten is a type of protein commonly found in barley, rye, or wheat. It triggers the cells in the gut to release zonulin, a protein that can damage the tight junctions responsible for holding the intestines.

If the junctions break, leaky gut occurs. Avoiding gluten in your diet for high blood pressure and thyroid can help keep your gut in good shape, preventing the interruption of hormonal activities in the body.

Upon doing groceries, check the labels for gluten.

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Study Selection And Data Extraction

Two reviewers independently screened the abstracts and titles of the search results, and articles were eliminated only if they did not investigate the association between subclinical thyroid dysfunction and blood pressure levels. The same two reviewers independently evaluated studies for eligibility on the basis of the predefined set of eligibility criteria.

Information from each study was extracted independently by the two reviewers , using a standardized data extraction form. General characteristics of the study used and adjusted factors), characteristics of the subclinical thyroid dysfunction and euthyroid groups and results were recorded, where available, and double checked. Discrepancies in data extraction between reviewers were resolved by discussion.

Hypothyroidism: The Cardiac Connection

Effects of Hypothyroidism: Thinning Hair, Heart Attack and ...

Hypothyroidism can affect the heart and circulatory system in a number of ways. Insufficient thyroid hormone slows your heart rate. Because it also makes the arteries less elastic, blood pressure rises in order to circulate blood around the body. Elevated cholesterol levels, which contribute to narrowed, hardened arteries, are another possible consequence of low thyroid levels.

Another noncardiac symptommuscle achesmay also be relevant. Muscle aches can be a symptom of hypothyroidism as well as a side effect of cholesterol-lowering statin medications, a condition known as statin-related myalgia. In fact, research suggests that hypothyroidism is more common in people who can’t tolerate statins. “Some experts believe that treating hypothyroidism may relieve or decrease statin-related myalgia,” says Dr. Garber.

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Function Of Thyroid Hormones

Thyroid hormone induces effects on practically all nucleated cells in the human body, generally increasing their function and metabolism.

  • Cardiac output, Stroke volume, and Resting heart rate increase through positive chronotropic and inotropic effects. Active thyroid hormone increases myocardial intracellular calcium to increase contraction force and speed. Concomitantly, vasculature in the skin, muscle, and heart dilate, resulting in decreased peripheral vascular resistance while blood volume increases through activation of the renin-angiotensin-aldosterone system.
  • Basal Metabolic Rate , Heat production, and Oxygen consumption elevate through thyroid hormone activation of mitochondrial uncoupling proteins. Glucose and fatty acid uptake and oxidation also increase, which results in increased thermogenesis and necessitates increased heat dissipation. Heat intolerance in hyperthyroidism is attributable to this increase in thermogenesis. Compensation for increased thermogenesis is also mediated by thyroid hormone through increases in blood flow, sweating, and ventilation.
  • Resting respiratory rate and minute ventilation undergo stimulation by active thyroid hormone, triiodothyronine , to normalize arterial oxygen concentration in compensation for increased rates of oxidation. T3 also promotes oxygen delivery to the tissues by simulating erythropoietin and hemoglobin production and promoting folate and cobalamin absorption through the gastrointestinal tract.
  • How Does Blood Pressure Work & What Is Hypertension

    Blood pressure is the measurement of what kind of pressure is being put on your blood vessels . The top number in a blood pressure reading reveals the pressure on the walls of the vessels when the heart is pumping, systolic blood pressure.

    The bottom number represents the pressure on the walls of the vessels when the heart is at rest or between beats, diastolic. Blood pressure acts diurnally, as well: higher during awake hours and lower while sleeping. Blood pressure readings consistently above 140/90 are considered hypertensive.

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    What Is Subclinical Hypothyroidism

    Thyroid dysfunction is expressed with normal serum levels of thyroid hormones and increased serum thyroid-stimulating hormone levels. It is common in elderly people and it is not clear if it should be always treated.

    Levothyroxine in low doses is recommended for selected cases as for instance, when there is a certain cause of hypothyroidism like an autoimmune disease.

    Subclinical hypothyroidism causes vague symptoms that may be interpreted as depression or chronic fatigue.Hypothyroidism may be suspected in an elderly patient with high diastolic blood pressure.

    How Are Thyroid Diseases Diagnosed

    Maximized Living — Off thyroid blood pressure medication

    It can be hard to tell if you have a thyroid disease. The symptoms are the same as many other health problems. Your doctor may start by asking about your health history and if any of your family members has had thyroid disease. Your doctor may also give you a physical exam and check your neck for thyroid nodules.

    Depending on your symptoms, your doctor may also do other tests, such as:

    • Blood tests. Testing the level of thyroid stimulating hormone in your blood can help your doctor figure out if your thyroid is overactive or underactive. TSH tells your thyroid to make thyroid hormones. Depending on the results, your doctor might do another blood test to check levels of one or both thyroid hormones in your blood.
    • Radioactive iodine uptake test. For this test, you swallow a liquid or capsule that holds a small dose of radioactive iodine . The radioiodine collects in your thyroid because your thyroid uses iodine to make thyroid hormone.

    High levels of radioiodine mean that your thyroid makes too much of the thyroid hormone. Low levels mean that your thyroid does not make enough thyroid hormone.

  • Thyroid ultrasound. The thyroid ultrasound uses sound waves to make a picture of the thyroid on a computer screen. This test can help your doctor tell what type of nodule you have and how large it is. You may need more thyroid ultrasounds over time to see if your nodule is growing or shrinking.
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    Can Hyperthyroidism Cause High Blood Pressure

    Most cases of hypertension are essential hypertension which typically closely associated with diet and lifestyles. But there is also another type of hypertension medically called secondary hypertension. Unlike in essential type, secondary type is much more associated with certain certain health problem . Kidneys disease ranks at the top cause in secondary type. Other causes include thyroid problem , sleep apnea, adrenal gland problems, tumors, abusing alcohol, pregnancy, and certain types of birth control pills.

    What is thyroid?

    You can find it just below the Adams apple . It is not more than an ounce.

    Though thyroid is very small in size but it is vital and very important to help regulate your metabolism.

    Almost all aspects of the metabolism in your body are influenced by this bow-shaped gland. Even the hormones released by thyroid can affect each cell of your body. So overall, its very important for your body to have a healthy thyroid because it has a significant impact on your health.

    In general, there are two major hormones produced by thyroid. They are T-3 and T-4 . The following are some crucial functions of these hormones:

  • They can regulate the rate on how much your body will use carbohydrates and fats.
  • Your heart rate is another thing that is also closely associated with the amounts of T-3 and T-4 released by thyroid.
  • They are needed by your body to help regulate the rate of how much protein will be produced in the body.
  • Easier to get sweating.
  • Dbp In Subclinical Hyperthyroidism And Cumulative Meta

    There were five studies, , , , that evaluated DBP levels in those with subclinical hyperthyroidism. Significant statistical heterogeneity was evident among the studies therefore, WMD was pooled using a random-effect model. The WMD of DBP in patients with subclinical hyperthyroidism revealed no significant difference ). Because one study did not report whether they excluded participants with hypertension who had taken oral antihypertensive drugs, we performed a sensitivity analysis excluding the study that showed a pooled WMD of 1.36mmHg . The exclusion of that study did not significantly modify the overall effects observed. Sequential cumulative meta-analyzed results for each year from 2006 were calculated. From 2006 onward, the pooled cumulative WMD varied between 0.59 and 1.24, with no evident trend. Neither the Eggerâs regression asymmetry test nor the Beggâs adjusted rank correlation test regarding DBP in subclinical hyperthyroidism indicated the existence of publication bias.

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    High Thyroid & Low Cholesterol

    While it’s usually good, sometimes low cholesterol is a bad sign. A sudden drop can be a sign of an overactive thyroid.

    In hyperthyroidism, your thyroid produces too much T3 and T4. High levels of these hormones speed up processes in your body, leading to:

    • Anxiety
    • Sudden weight loss
    • Rapid heartbeat

    Interestingly, while hyperthyroidism is linked to low cholesterol, high cholesterol may be linked to a hyperthyroidism-related complication.

    Graves’ disease is an autoimmune condition that causes hyperthyroidism. It sometimes involves an eye disease called orbitopathy. Increased levels of LDL and total cholesterol are risk factors for orbitopathy.

    Risk Factors Of Hypothyroidism

    The Thyroid &  Arrhythmia (atrial fibrillation) Connection

    Hypothyroidism can affect people of all ages, genders and ethnicities. Women, particularly older women, are more likely to develop hypothyroidism than men. Women are generally more likely to develop hypothyroidism after menopause than earlier in life. Although anyone can develop hypothyroidism, you’re at an increased risk of hypothyroidism if you:

  • Being a woman
  • Received radiation to neck or upper chest.
  • Have had thyroid surgery
  • Have been pregnant or delivered a baby within the past six months.
  • Have Turner syndrome .
  • Bipolar disorder etc.
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