Glutathione Helps Prevent Glaucoma And Cataracts
Glaucoma and cataracts can gradually cause loss of vision. Both of these conditions are in part caused by oxidative stress to the ocular nerve, which glutathione may reduce [R].
Glutathione Encourages A Healthy Pregnancy
In pregnant women, low glutathione levels caused by depression may lead to impaired brain development in the unborn child [R].
Increased amounts of reactive oxygen species in a fetus have been linked to preterm labour. Thus, by reducing these oxygen species, glutathione can delay the onset of labour to a biologically healthier time [R].
Glutathione May Treat AIDS
A study showed that older AIDS patients produced lower levels of glutathione in their mitochondria [R].
NAC (glutathione’s precursor) blocks the stimulatory effect of TNF on HIV replication [R].
AIDS sufferers with glutathione deficiencies have decreased insulin sensitivity and muscle strength. Introducing adequate glutathione effectively treats these issues [R].
Glutathione deficiency weakens the immune systems of AIDS patients with already weak bodies. Studies have shown that giving these individuals additional glutathione can rebalance their immune systems [R].
Introducing glutathione into the body decreases the chances of AIDS sufferers developing tuberculosis [R].
Glutathione May Treat Cystic Fibrosis
People with cystic fibrosis have low glutathione levels [R].
Cystic fibrosis causes the release of oxidative reactants into inflammatory cells. Making matters worse, cystic fibrosis reduces levels of glutathione able to scavenge these reactants [R].
Glutathione inhalers can restore oxidant-antioxidant balance and reduce inflammation in those with cystic fibrosis [R].
More broadly, certain forms of buffered glutathione have been found to lower the symptoms of cystic fibrosis [R].
Glutathione May Help Treat Rheumatoid Arthritis
Studies have shown that antioxidant mechanisms can be impaired in subjects with rheumatoid arthritis. Glutathione levels were shown to be significantly lower in these patients [R].
Patients with rheumatoid arthritis have increased levels of glutathione peroxidase as a response to high levels of oxidative stress. It makes sense to supplement glutathione to ensure that these individuals can match this high demand for glutathione [R].
Glutathione May Treat Acne
A decline in antioxidative activity, especially a decrease in glutathione quantity, may play a key role in the development of acne [R].
Increasing glutathione levels may help reduce acne by decreasing oxidative stress levels.
Glutathione Can Treat Sleep Apnea
A study showed that glutathione levels were low in subjects who were diagnosed with sleep apnea, and that increasing those levels of glutathione to normally improved sleep quality in these patients [R].
Glutathione Can Help With Respiratory Issues
One study showed that low levels of glutathione increased inflammation and caused asthma in the airway [R].
The same study showed that increasing levels of glutathione decreased inflammation and reduced asthma in the airway [R].
Chronic Obstructive Pulmonary Disease (COPD) is a lung disease caused by long-term oxidative damage to lung tissue, the damage of which results in inflammation of the lung tissue, causing shortness of breath and coughing [R].
Glutathione supplements can decrease this oxidative damage and tissue damage within the lungs, thereby reducing the risk of developing COPD [R].
Glutathione Controls Cell Death
Glutathione depletion is a key signalling event that controls the activation of cell death pathways. For example, S-glutathionylation in important for protein modulation and apoptotic (cell death) initiation [R, R].
Cells depleted of glutathione are susceptible to damage, especially from arachidonic acid. Studies show that low glutathione levels cause a series of events, which ultimately result in cell death [R].
Glutathione May Reduce Consequences Of Drugs Or Alcohol
Chronic alcohol use causes oxidative stress and reduces liver levels of glutathione [R].
Glutathione can reduce the effects of chronic use by decreasing the presence of reactive oxygen species (ROS) [R].
Glutathione improved the liver function of alcoholics, but only when they abstained from alcohol use.
Chronic alcohol ingestion causes oxidative stress in the lungs which can often lead to respiratory infections such as pneumonia. Glutathione can protect the lungs by reducing oxidative stress [R].
Glutathione May Help Prevent Addiction
Consumption of cocaine, methamphetamines, and alcohol lead to increased production of reactive oxygen species (ROS).
These species can alter proteins involved in neuronal and behavioural pathways, causing the subject to become addicted. By reducing the presence of these reactive species, glutathione may decrease the development of addictive behaviours [R, R].
This may also be applicable to overeating disorders [R].
Glutathione Protects Against Liver Damage
Liver disease is caused by oxidative stress. Glutathione keeps the liver healthy by helping in reducing this oxidative stress in the liver [R].
The liver upregulates glutathione synthesis to combat the effects of a high-fat diet.
Oral administration of reduced glutathione (300mg/day) is effective at preventing non-alcoholic fatty liver disease, which can eventually lead to cirrhosis and liver cancer [R].
Glutathione May Prevent Kidney Disease
Oxidative stress in the kidneys can cause kidney failure [R].
Studies in rats have shown that the precursor of glutathione, NAC, can prevent kidney disease due to aspartame [R].
A study, which investigated 20 patients suffering from chronic renal failure and undergoing hemodialysis, found that supplemental glutathione resulted in a marked improvement in kidney function (as measured by red blood cells, plasma reduced glutathione, hematocrit, and haemoglobin) [R].
Glutathione May Treat Diabetic Complications
Diabetes II and high blood sugar cause the reduction of glutathione in the body [R].
Free radical accumulation causes many of the complications associated with diabetes type 2, such as cardiovascular problems and neurodegeneration [R].
Studies show introducing extra glutathione into the body prevents or limits these complications [R].
Glutathione May Help In Preventing Heart Disease
Cardiovascular disease is largely caused by oxidative stress in heart tissues. Perhaps this is why insulin resistance, impaired glucose tolerance, and diabetes (3 conditions that cause oxidative stress), are linked to heart attacks [R, R].
Glutathione can help in reducing these reactive species and, in turn, limit the risk of stroke or heart attack [R].
Glutathione May Treat Psychiatric Disorders
Schizophrenics have low levels of glutathione. NAC, which increases glutathione levels in the brain, was shown to improve the symptoms of schizophrenia in human subjects [R].
Patients with OCD have low levels of glutathione in certain parts of their brain (e.g., lower posterior cingulate cortex) [R].
High levels of free radicals were found in the blood of patients with OCD. Reducing these levels by introducing glutathione may help reduce the severity of OCD symptoms [R].
Furthermore, glutathione may help to reduce stress, which is a major symptom and possibly a contributing factor of OCD [R].
Multiple drugs used to treat bipolar disorder work by increasing glutathione levels [R].
Glutathione And Cancer
Glutathione is a major factor in the regulation of life, proliferation, and death of cancer cells [R].
Glutathione deficiency, or a decrease in the glutathione/glutathione disulphide (GSSG) ratio, leads to increased damage from the oxidative stress involved in the progression of cancer [R].
There is a significant correlation between increased glutathione intake and decreased risk of oral and throat cancer [R].
Furthermore, glutathione plays a key role in repairing the damage done by cancer drugs on cells in chemotherapy patients [R].
Glutathione is crucial in the removal and detoxification of carcinogens. However, it should be noted that, by conferring resistance to a number of chemotherapeutic drugs, elevated levels of glutathione can actually protect tumour cells. Perfect balance is imperative [R, R].
Glutathione May Treat Autism
Other abnormalities have been found in the transsulfuration pathway (the pathway where glutathione is produced) in children diagnosed with autism [R].
This includes lower levels of cysteine, the rate-limiting substrate for glutathione production [R].
Oral and transdermal glutathione are currently being used to normalize glutathione levels in autistic children. Early studies indicate that this may improve some of the transsulfuration metabolites often low in autistic children [R].
Glutathione May Heal The Gut
Patients with IBS have decreased activity of enzymes involved in glutathione synthesis, as well as lower levels of glutathione’s precursor, cysteine [R].
Glutathione peroxidase is an important enzyme for the normal renewal of the gut wall [R].
Glutathione protects the intestinal mucosa. Administration of glutathione may protect the gut wall which, when weakened, can lead to leaky gut (R).
Glutathione May Help With Infections
In many diseases (e.g., AIDS, COPD, cystic fibrosis, influenza, and alcoholism), lowered immunity and increased risk of infections correlate to low glutathione levels [R].
Patients with tuberculosis have been shown to have low glutathione levels [R].
Glutathione depletion lowers the anti-infection activity of macrophages, while NAC(glutathione precursor) increased intracellular killing of mycobacteria [R].
Another study showed that the maintenance of cysteine levels, and thus glutathione levels, is important for enhancing mycobacterial killing activity [R].
Glutathione May Limit Neurodegeneration
The cells of the human brain consume about 20% of the oxygen utilized by the body but make up only 2% of the body’s weight. Reactive oxygen species are continuously generated during oxidative metabolism. Therefore, the detoxification of reactive oxygen species is an essential task within the brain. Glutathione plays a key role in this process [R].
Alzheimer’s disease is in part caused by the oxidative stress that antioxidants neutralize, as demonstrated by clinical studies showing that oral vitamin E (powerful antioxidant) intake slowed the progression of Alzheimer’s [R].
To make matters worse, Alzheimer’s is characterized by an accumulation of TDP-43 (a DNA binding protein) in the nervous system, which further lowers glutathione levels [R].
In mice, a protein that increases glutathione levels in the body was found to increase memory in subjects with Alzheimer’s [R].
Parkinson’s disease is caused, in part, by oxidative stress in the nervous system. Glutathione combats this oxidative stress.
Parkinson’s disease involves the loss of dopaminergic neurons in the substantia nigra part of the brain. Studies have noted that people in pre-clinical stages of Parkinson’s have low glutathione levels in the substantia nigra [R].
A study showed that a drug, named 3,4-dihydroxy benzalacetone, helped prevent Parkinson’s disease by increasing levels of glutathione [R].
Huntington’s disease is caused by oxidative stress and mitochondrial dysfunction [R].
Studies have shown that a special form of curcumin successfully helped improve mitochondrial health by increasing glutathione levels [R].
Glutathione May Prevent Depression And Stress
Also, glutathione is able to prevent shock-induced behavioural depression in animals [R].
A study on mice showed that alprazolam, a drug used to relieve stress, increased levels of glutathione in the mice [R].
Glutathione Is Anti-Aging
With less glutathione, free radicals can harm the body and cause ageing [R].
Replenishing glutathione levels may slow the ageing process [R].
Imbalances in glutathione levels affect immune system function and are thought to play a role in the ageing process [R].
Multiple studies have demonstrated that the body makes less glutathione as it ages [R].
Glutathione drops off during menopause, which may be part of the reason for the dramatic ageing that occurs during this time in a woman’s life.
By maintaining glutathione levels, ageing individuals may prevent age-related cognitive decline [R].
Decreased levels of glutathione in ageing subjects caused oxidative stress, which can cause bone breaking and osteoporosis [R].
Myricitrin, a drug used in preventing age-related osteoporosis, may work by increasing levels of glutathione [R].
Glutathione May Control Inflammation
Glutathione inhibits the production of most inflammatory cytokines [R].
Glutathione deficiency caused inflammation in the airways of mice. This inflammation was reduced when the mice were given glutathione [R].
Also, glutathione inhibits NF-κ, a transcription factor that increases the transcription of various inflammatory genes [R].
A number of pulmonary diseases are caused by excessive inflammation. In many of these diseases, restoring glutathione to a healthy level is protective, indirectly supporting the idea that glutathione is anti-inflammatory [R].
Glutathione Fights Oxidative Stress In The Body
Glutathione protects against chronic oxidative stress that can cause cancer, neurodegeneration, and a range of other diseases that we will discuss below [R].
As well and neutralizing reactive oxygen species (ROS), glutathione is important for the regeneration of other antioxidants, such as vitamins C and E [R].