Hello, people! Last week, we finished up our discussion on the darker side of OCD and talked about the most difficult subtype to deal with, the pure hell of pure obsession OCD, aka Pure O. As promised, we’re back this week with a new topic, N-acetyl Cysteine, or NAC. NAC is an amino acid used by the body to build antioxidants. Antioxidants are vitamins, minerals, and other nutrients that protect and repair the body’s cells from damage, usually referred to as oxidative stress. Historically, NAC has been used mainly in emergency rooms to treat people who overdose on acetaminophen… I’ve ordered it innumerable times for this very purpose. These days, it can be purchased as a supplement OTC, and new studies have begun investigating its effectiveness as both a stand-alone and adjunctive treatment for depressed mood associated with depression, bipolar disorder, schizophrenia, OCD, and trichotillomania, as well as abuse and dependence on nicotine, Cannabis, and cocaine. And it has shown some promising results.
Before we get to that, let’s talk about some things NAC does in the body.
1. NAC is essential for making the body’s most powerful antioxidant, glutathione. Along with two other amino acids- glutamine and glycine- NAC is needed to make and replenish glutathione, which helps neutralize free radicals that can cause oxidative stress- damage to cells and tissues in your body. It’s essential for immune health and for fighting cellular damage, and some researchers believe it may even contribute to longevity. Its antioxidant properties are also important for combatting numerous other ailments caused by oxidative stress, such as heart disease, infertility, and some psychiatric conditions. More on those later.
2. NAC helps detoxify the body to prevent or diminish kidney and liver damage, helping to prevent deleterious side effects of drugs and environmental toxins. This is why doctors regularly give intravenous NAC to people with acetaminophen overdose. It’s usually organ failure that gets you in acetaminophen overdose, and NAC helps to prevent or reduce damage to the kidneys and liver, increasing the chances of survival. NAC also has applications for other liver diseases due to its antioxidant and anti-inflammatory benefits.
3. NAC helps regulate levels of glutamate, the most important neurotransmitter in your brain, and this may improve some psych disorders and addictive behavior. While glutamate is required for normal brain function, excess glutamate paired with glutathione depletion can cause brain damage. This state- excess glutamate with glutathione depletion- is commonly seen in certain psych disorders; specifically, it’s thought to contribute to bipolar disorder, schizophrenia, obsessive-compulsive disorder, and addictive behavior.
For people with bipolar disease and depression, NAC may help decrease symptoms and improve overall ability to function, and research suggests that it may also play a role in treating moderate to severe OCD. In addition, an animal study implied that NAC may minimize the so-called negative effects of schizophrenia, such as social withdrawal, apathy, and reduced attention span. NAC supplements can also help decrease withdrawal symptoms and prevent relapse in cocaine addicts, and preliminary studies show that NAC may decrease marijuana and nicotine use and cravings. Many of these disorders currently have limited or ineffective treatment options, so NAC may be an effective option for individuals with these conditions. More on this in a moment.
4. NAC can help relieve symptoms of respiratory conditions by acting as an antioxidant and expectorant, loosening mucus in the air passageways. As an antioxidant, NAC helps replenish glutathione levels in your lungs, and reduces inflammation in the bronchial tubes and lung tissue. People with chronic obstructive pulmonary disease (COPD) experience long-term oxidative damage and inflammation of lung tissue, which causes airways to constrict, leading to shortness of breath and coughing. NAC supplements have been used to improve these COPD symptoms, leading to fewer exacerbations and less overall lung decline. In a one-year study, 600 mg of NAC twice a day significantly improved lung function and symptoms in people with stable COPD. But those with chronic bronchitis can also benefit from NAC. Bronchitis is the term for when the mucous membranes in your lungs’ bronchial passageways become inflamed, restricting airflow to the lungs. Not much fun. By thinning the mucus in the bronchial tubes, while also boosting glutathione levels, NAC may help decrease the severity and frequency of wheezing and coughing in respiratory attacks. In addition to relieving COPD and bronchitis, NAC may improve other lung and respiratory tract conditions like cystic fibrosis, asthma, and pulmonary fibrosis, as well as symptoms of garden variety nasal and sinus congestion due to allergies or infections. Ultimately, NAC’s antioxidant and expectorant capacity can improve lung function in everyone by decreasing inflammation and breaking up and clearing out mucus.
5. NAC boosts brain health by regulating glutamate and replenishing glutathione. The neurotransmitter glutamate is involved in a broad range of learning, behavior, and memory actions, while the antioxidant glutathione helps reduce oxidative damage to brain cells associated with aging. Glutamate levels are subject to the three bears law: you need some, but too much isn’t good, as it’s an excitatory neurotransmitter. Because NAC helps regulate glutamate levels and replenish glutathione, it may benefit those with brain and memory ailments. The neurological disorder Alzheimer’s disease slows down a person’s learning and memory capacity, and animal studies suggest that NAC may slow the loss of cognitive ability in people with it. Another brain condition, Parkinson’s disease, is characterized by the deterioration of cells that generate the neurotransmitter dopamine. Oxidative damage to cells, and a decrease in antioxidant ability, contribute to this disease, and NAC supplements appear to improve dopamine function as well as disease symptoms, such as tremor.
6. NAC may improve fertility in both men and women. Approximately 15% of all couples trying to conceive are affected by infertility, and in nearly half of these cases, male infertility is the main contributing factor. Many male infertility issues increase when antioxidant levels are insufficient to combat free radical formation in the male reproductive system, leading to oxidative stress and cell death, culminating in reduced fertility. In some cases, NAC has been shown to combat this, improving male fertility. One condition that contributes to male infertility is varicocele. This is when veins inside the scrotum become enlarged due to free radical damage; surgery is currently the primary treatment. In one study, 35 men with varicocele were given 600 mg of NAC per day for three months post-surgery. The combination of surgery and NAC supplement improved semen integrity and partner pregnancy rate by 22% as compared to the control group with surgery alone. Another study in 468 men with infertility found that supplementing with 600 mg of NAC and 200 mcg of selenium for 26 weeks improved semen quality. Researchers suggested that this combined NAC/ selenium supplement should be considered as a treatment option for male infertility. In addition, NAC may improve fertility in women with polycystic ovary syndrome (PCOS) by inducing or augmenting the ovulation cycle which is altered by the condition.
7. NAC may stabilize blood sugar by decreasing inflammation in fat cells. High blood sugar and obesity contribute to inflammation in fat tissue. This can lead to damage or destruction of insulin receptors, which puts you at a much higher risk of type 2 diabetes. When insulin receptors are intact and healthy, they properly remove sugar from your blood, keeping levels within normal limits. When the insulin receptors are damaged, blood sugar levels are more difficult to control. Animal studies show that NAC may stabilize blood sugar by decreasing inflammation in fat cells, keeping receptors happy, and thereby improving insulin resistance. That said, human research on NAC is needed to confirm these effects on blood sugar control.
8. NAC may reduce heart disease risk by preventing oxidative damage. Oxidative damage is caused by free radicals, and this type of damage to heart tissue often leads to heart disease, causing strokes, heart attacks, and other serious cardiovascular conditions.
NAC may reduce heart disease risk by reducing oxidative damage to tissues in the heart. It has also been shown to increase nitric oxide production, which helps veins dilate, improving blood flow. This expedites circulation and blood transit back to your heart, and this can lower the risk of heart attack. Interestingly, a test-tube study showed that when combined with green tea, another well recognized antioxidant, NAC appears to reduce damage from oxidized “bad” LDL cholesterol, another bigtime contributor to heart disease.
9. NAC and its ability to boost glutathione levels appears to increase immune function, boosting immune health. Research on certain diseases associated with NAC and glutathione deficiency suggests that immune function might be improved, and potentially even restored, by supplementing with NAC.
This has been studied mostly in people with human immunodeficiency virus (HIV). In two studies, supplementing with NAC resulted in a significant increase in immune function, with an almost complete restoration of natural killer cells, the main patrol cells. High levels of NAC in the body may also suppress HIV-1 reproduction. A test-tube study indicated that in other immune-compromised situations, such as the flu, NAC may hamper the virus’s ability to replicate; this could potentially reduce the symptoms and lifespan of the associated viral illness. Other test-tube studies have similarly linked NAC to cancer cell death and blocked cancer cell replication. Great news, but more human studies are needed.
This is a short blog, but that’s a good place to stop for this week. Next week, we’ll talk about how NAC may alleviate the symptoms of multiple psychiatric disorders, as well as reduce addictive behavior; and we’ll talk about some preliminary study findings as well. I hope you enjoyed this blog and found it to be interesting and educational. Please feel free to share it with family and friends. Be sure to check out my YouTube channel with all of my videos, and I’d appreciate it if you would like, subscribe, leave comments, and share those vids! As always, my book Tales from the Couch has more educational topics and patient stories, and is available in office and on Amazon.
Thank you and be well people!