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    'Worst Yet To Come': As COVID Spike Proteins Slowly Take Toll On Endocrine System, Expert Warns Of Rise In Hormone-Related Diseases

    November 8, 2022
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    Since hormones can have slow and systemic actions, a dysfunctional or damaged endocrine system will generally be slow in its symptom onset and recovery, warned Dr. Flavio Cadegiani, a Brazilian endocrinologist.

    Covid-19 Spiked Protein

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    By The Epoch Times

    Dr. Flavio Cadegiani, a Brazilian endocrinologist, suspects that the worst has yet to come for spike protein-induced diseases in the endocrine system.

    The endocrine system, colloquially known as the hormone system, is critical for our health. It regulates growth and development, mood, metabolism, reproduction, immunity and functions of other organs through the secretion of hormones.

    Hormones are one of the three biggest messengers in the body. Compared to the two other messengers — neurotransmitters and cytokines — hormones are slower in responding, and have systemic functions across the body rather than localized actions.

    While cells can usually respond to neurotransmitters in milliseconds and cytokines in minutes to hours, cells that respond to hormones can take hours or even weeks.

    Since hormones can have slow and systemic actions, a dysfunctional or damaged endocrine system will generally be slow in its symptom onset and recovery.

    Studies have shown that spike proteins from COVID-19 infection and the vaccines can damage endocrine glands, including pituitary, thyroid and adrenal glands, as well as reproductive organs and many more.

    Cadegiani raised a concern that the slower onset of endocrine pathologies may pose difficulties in diagnosis and treatment.

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    Depletion of hormonal reserves

    Endocrine pathologies can take longer to become apparent because endocrine glands have “reserves,” according to Cadegiani.

    “What we’re going to see in the future [for endocrine diseases] is a little bit different from the other fields, because glands have reserves and the decrease of the reserve will not be clinically seen right now, but it may be in the future,” said Cadegiani at a Front Line COVID-19 Critical Care Alliance conference in Kissimmee, Florida.

    Therefore, affected individuals may show no symptoms until their reserves have been depleted.

    Cadegiani said that most of his concerns for the future are speculative and based his own clinical observations. But since the pandemic and the administration of COVID-19 vaccines began, there have been increasing reports that implicate endocrine pathologies.

    Hormonal axis and systemic dysfunction

    Hormones regulate the entire body, so once the reserves are depleted and underlying endocrine pathologies are unmasked, there may be cases of systemic dysregulation.

    Endocrine glands control the function of many organs across the body, and each endocrine organ is also connected through a feedback loop, also known as a hormonal axis.

    At the top of this chain is the hypothalamus, which is a diamond structure in the brain and acts as a master switchboard. It sends messages to the pituitary glands, a small, oval structure tucked behind the nose.

    The pituitary gland is colloquially known as the master gland; it regulates other endocrine organs, together with the hypothalamus forming hormonal axes.

    The pituitary gland is part of the hypothalamic-pituitary-gonadal (HPG) axis which regulates the reproductive organs including the ovaries and the testes. In females, it is responsible for regulating the release of ovarian hormones as part of the menstrual cycle, and in males the axis regulates spermatogenesis.

    The hypothalamic-pituitary-adrenal (HPA) axis is a neuroendocrine axis that mediates the adrenal glands, an organ that produces hormones that trigger the fight or flight response.

    The fight or flight process is a stress response that occurs in response to harmful threats, and can reduce metabolism, suppress immunity as well as activate the sympathetic nervous system.

    Another major axis is the hypothalamic-pituitary-thyroid axis. This regulates the thyroids and the hormones it secretes. Thyroid hormones are essential for biological functions of growth, regulation of the cardiovascular system, bone replacement, liver function and metabolism.

    How spike proteins target the endocrine system

    The spike protein is the most toxic part of the SARS-CoV-2 virus. Studies on people with long COVID-19 and post-vaccine symptoms often detected spike protein presence months or even a year after the exposure.

    Spike protein particularly favors tissues and organs that express ACE2 and CD147 receptors. Many endocrine glands display ACE2 receptors, including the pancreas, thyroid, testes, ovaries, adrenal glands and the pituitary gland, making the endocrine system particularly vulnerable to SARS-CoV-2.

    The key driver behind spike protein-induced disease is inflammation.

    Upon entering cells, spike protein can activate pro-inflammatory pathways by inducing DNA damage, inhibiting DNA repair, causing stress to the cell’s mitochondria, which is critical for cell energy production and many more. All of this lead to cellular stress, injury and possible cell death.

    When many cells are affected, it can cause problems in tissues and organs, affecting individual endocrine glands and the system.

    Spike proteins also inhibit autophagy, the cellular “recycling system,” thereby preventing the cells from clearing the toxic protein out, leading to prolonged damage.

    Spike proteins may also contribute to autoimmunity. Since it shares many similarities with common human tissues and proteins — known as “molecular mimicry” — it has the potential to cause immune cells to mount an attack against their own cells and organs, leading to endocrine damage.

    Several studies have reported on endocrine pathologies following COVID-19 vaccination, though data on the exact damage is still emerging.

    Pituitary glands

    As the master gland of the endocrine system, the pituitary gland secretes many hormones, including ones that regulate other endocrine glands:

    • Adrenocorticotrophic hormone (ACTH) targets the adrenal glands and is responsible for producing cortisol, which stimulates the stress response.
    • Thyroid-stimulating hormone (TSH) regulates the thyroid.
    • Growth hormone is responsible for growth and metabolism.
    • Melanocyte-stimulating hormone boosts the production of melanin when exposed to UV rays and increases appetite.
    • Anti-diuretic hormone is responsible for retaining water and producing less urine.
    • Luteinizing hormone (LH), follicle-stimulating hormone (FSH) and prolactin are important for reproduction.
    • Oxytocin plays a role in childbirth, metabolism and happiness.

    Studies in cell culture have shown that the spike protein is able to suppress the production of LH and FSH in pituitary cells, with unknown long-term consequences in humans.

    ACTH deficiencies have been observed following mRNA vaccination in Japan, with the person affected found to have a shrunken pituitary gland.

    Cadegiani said that pathologies in the pituitary are difficult to diagnose; they are often masked by other conditions, therefore there is little literature on pituitary pathology presentation after COVID-19 vaccinations.

    Adrenal glands

    There is published literature with data that may be used as evidence to suggest spike protein injury at the adrenal glands.

    The adrenal glands, located above the kidneys, produce hormones responsible for the stress response. This includes adrenaline, cortisol and aldosterone. The release of these three hormones is critical for maintaining energy and other needs during stressful situations.

    Studies on COVID-19 have shown that the adrenal glands are major sites of SARS-CoV-2 mRNA accumulation and spike protein production.

    The glands are also likely to be involved in post-vaccine myocarditis events that are often seen in young males. Cadegiani reasons that this type of myocarditis may be a sign of adrenal dysfunction.

    Cadegiani authored a peer-reviewed study on post-vaccine myocarditis and concluded catecholamines are the main trigger for these events. Catecholamines are a group of neurohormones and includes dopamine, noradrenaline and adrenaline.

    While dopamine mostly acts within the nervous system, both adrenaline and noradrenaline play important roles in stress responses.

    Adrenaline activates the fight or flight stress response and noradrenaline supports the response by increasing heart rate, breaking down fats and increasing blood sugar levels.

    Intense and prolonged exercise triggers the fight or flight response, which is why catecholamines are usually elevated in athletes. Males in particular tend to have higher levels of catecholamine. Testosterone is also suspected to play a role in the higher incidence of myocarditis following vaccination.

    Stress responses increase blood pressure, stronger heart contraction and when chronic, can increase the risk of cardiac events. 

    Cadegiani linked catecholamines with myocarditis by analyzing autopsy reports of two teenage boys who died three to four days after mRNA vaccination from myocarditis events.

    Their heart damage was different from normal myocarditis pathology, with clear similarities with stress-induced cardiomyopathy; Cadegiani observed clear characteristics of catecholamine-induced myocarditis.

    He hypothesized that vaccines triggered a hyper-catecholaminergic state by elevating levels of adrenaline, causing hyperactivation of adrenaline.

    Studies on mRNA-vaccinated athletes also found that after exercise, those who were vaccinated had higher heart rates and noradrenaline levels than those who were not vaccinated.

    Dysfunctions in the adrenal glands are likely to lead to adrenal insufficiency.

    Cadegiani hypothesized adrenal insufficiency — a condition that the adrenal glands become unable to produce enough hormones — to be a possible consequence of spike protein injury.

    There is already a report of adrenal insufficiency following infection; in the case of long COVID-19 where there are spike protein remnants, it is likely that the damage will be prolonged, possibly leading to chronic damage.

    In the case of vaccines, a report evaluating spike protein production after COVID-19 mRNA vaccination found that the adrenal glands were one of the highest spike protein-producing tissues, and the spike protein production in these glands increased with time.

    Current research has also shown that complications from thrombocytopenia as a post-vaccine symptom have led to adrenal hemorrhage and adrenal insufficiency.


    The thyroid is a butterfly-shaped gland located over the throat. It has a lot of functions, primarily regulating growth and metabolism.

    It makes two hormones, thyroxine and triiodothyronine. Deficiencies in triiodothyronine results in hypothyroidism, characterized by a large thyroid; over-secretion of it can cause hyperthyroidism.

    The thyroid also plays a role in regulating the immune system. COVID-19 infection is often a sign of underlying thyroid problems, and damage from infection can exacerbate thyroid problems, creating a negative cycle.

    An autopsy study on 15 people deceased from COVID-19 found that 13 of them had viral RNA and proteins in their thyroid tissues. ACE2 receptors, previously thought to be not presented on the thyroid, were also detected, indicating a possible route for SARS-CoV-2 infection.

    Though the research shows that thyroids can be implicated in infection, thyroiditis, which is inflammation of the thyroid, has currently only been reported in relation to the COVID-19 vaccine.

    A study from Turkey stated that the COVID-19 vaccine can induce thyroiditis. The study evaluated 15 patients who developed thyroiditis following vaccination.

    Four of the patients also developed Grave’s disease, which is an autoimmune disease and a complication of hyperthyroidism. Hashimoto’s disease, another thyroid autoimmune condition, has also been reported following vaccinations.

    It is possible that spike proteins produced from vaccinations may attack the thyroid cells by binding to ACE2 receptors. However, looking at the high reports of autoimmune diseases, Cadegiani suspects that the pathogenesis of thyroid dysfunction is likely autoimmune.

    The spike protein has also demonstrated its autoimmune capacity due to high incidences of “molecular mimicry.”


    The pancreas produces glucagon and insulin, two important hormones that regulate our blood sugar levels. Dysregulation of blood sugar levels is an indication of pancreatic dysfunction and may lead to complications such as diabetes.

    Spike protein both from the vaccine and the virus has shown a potential to disturb glucose metabolism.

    There have been reports of a sudden onset of type 1 diabetes, which is a form of autoimmune disease where the body attacks its own pancreatic beta cells.

    A study evaluating EudraVigilance safety surveillance reports has also found reports of dysregulation of blood glucose with transient worsening of hyperglycemia reported after vaccinations.

    Chronic hyperglycemia, meaning high blood sugar, is usually a sign of dysfunction in the pancreatic beta cells.

    Therefore Cadegiani proposed that there could be a loss or malfunction of pancreatic beta cells as studies have shown that the spike protein is able to directly affect and damage these beta cells, likely resulting in their death.

    Reproductive organs

    The harms of COVID-19 on male reproductive organs are well established.

    A study from Thailand showed that in 153 sexually active men, around 64.7% experienced erectile dysfunction during COVID-19 infection, with 50% persisting in these symptoms three months after recovery.

    Erectile dysfunction has been established in research to be due to dysfunctions of the endothelial cells, and the spike protein impairs endothelial cells.

    Studies linking COVID-19 and erectile dysfunction have largely blamed it on the virus’s interaction with ACE2 receptors displayed on the surface of endothelial cells. Endothelial cells are abundant in ACE2 receptors, making them one of the most targeted in COVID-19 infections.

    study evaluating adenovirus DNA vaccines showed that cells exposed to the vaccines also produced spike proteins that could interact and bind with ACE2 receptors, suggestive of equal endothelial damage.

    Since the vaccine rolled out in 2021, the CDC data reported 193 cases of erectile dysfunction following COVID-19 vaccination.

    An Israeli study on sperm donations has also noticed a reduction of 15% in sperm concentration and 22% in motile sperm count following COVID-19 mRNA vaccination.

    The authors confirmed in a later response that the people tested had no underlying health conditions, and therefore the reduction could not be due to any underlying health conditions that were existent prior to the vaccination.

    Though sperm count gradually made a recovery after 145 days, sperm concentration and motility did not return to pre-vaccination levels, with unknown long-term effects.

    Concerns of reproductive problems have also been reported in women, most particularly after vaccinations rather than after infection.

    Studies showed that men are generally at a higher risk of severe outcomes and deaths from COVID-19 infections; however, women seem to be at a higher risk of vaccine injury. 

    Vaccine Adverse Event Reporting System (VAERS) data showed that over 60% of adverse event reports came from women, indicating that women are more vulnerable to post-vaccine symptoms.

    Dr. Paul Marik, critical care expert, also observed that women were at a greater risk of presenting with post-vaccine symptoms in the clinic.

    During the pandemic, many women reported menstrual abnormalities following vaccination. A study on Middle Eastern women found almost 70% of them reported menstrual irregularities after vaccination.

    A study funded by the National Institute of Health found a “temporary increase in menstrual cycle length” linked to the COVID-19 vaccination.

    A study published on the website titled My Cycle Story reported over 290 women experienced decidual cast shedding after the COVID-19 vaccines rolled out, even though less than 40 such cases have been documented over the past 109 years.

    This also indicated that many of the reproductive symptoms women were suffering from may be vaccine-related, rather than related to COVID-19 infections.

    Cadegiani predicted greater adverse events in pregnancies for the coming future.

    He cited a study that concluded “no association” between COVID-19 vaccines and fertility. The data however showed that unvaccinated women had a higher rate of pregnancy than the vaccinated, both for clinical and biochemical pregnancy.

    The authors of the paper reviewed 10 studies and found that unvaccinated women have a clinical and biochemical pregnancy rate of 47 and 60% respectively, while the COVID-19-vaccinated had a rate of 45 and 51%.

    Cadegiani predicts more cases of endocrinopathologies as a result of spike injuries in the future.

    “Endocrine diseases progress slowly and then only clinically appears in the severe states,” said Cadegiani. “So it’s not possible to tell this [anytime] beforehand.”

    Reprinted with permission from The Epoch Times.

    Marina Zhang is based in New York and covers health and science for The Epoch Times.

    The views and opinions expressed in this article are those of the authors and do not necessarily reflect the views of Children's Health Defense.

    “© [Article Date] Children’s Health Defense, Inc. This work is reproduced and distributed with the permission of Children’s Health Defense, Inc. Want to learn more from Children’s Health Defense? Sign up for free news and updates from Robert F. Kennedy, Jr. and the Children’s Health Defense. Your donation will help to support us in our efforts.



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