When you drink a substantial amount of alcohol, your liver has to first convert it into acetaldehyde and then into acetate, a totally harmless compound which is released into the bloodstream.
The problem is that acetaldehyde, the intermediate compound, is a highly toxic metabolite which alters the properties of certain proteins and promotes cell death. It therefore needs to be converted into acetate as quickly as possible in order to prevent it causing excessive damage in the body. An enzyme called ALDH ensures this crucial conversion takes place. It also brings into play a number of endogenous antioxidants such as glutathione.
After a heavy drinking session, availability of ALDH and reserves of glutathione are thus seriously compromised, and yet they both play a key role in detoxifying paracetamol! It is converted in the body into a compound called NAPQI, highly toxic for the liver, which is usually eliminated by ALDH in conjunction with glutathione (1).
In other words, when you drink too much alcohol, you lower the chances of the paracetamol in your system being properly detoxified (2-3), even to the point where whole parts of your liver may be destroyed: this is hepatic lysis.
Surprising though it may seem, it’s actually true.
We tend to take a couple of paracetamol to make us feel better when we’re feeling a bit off-colour. But automatically reaching for a drug we assume will improve our condition is actually the wrong course of action since it damages the efficacy of the body’s antioxidant enzyme system (4).
Although paracetamol can itself be a temporary antioxidant, when it is metabolised by the body it triggers a fall in levels of glutathione, glutathione peroxidase (GPx), superoxide dismutase and in antioxidant status as a whole (5). Yet these enzymes are among the most effective antioxidants for fighting the free radicals involved in ageing and diseases …
It’s probably true.
In fact, we don’t yet fully understand paracetamol’s mechanism of action. Among the several theories suggested is the idea that it optimises certain neurons which exert an inhibitory effect on nociceptive (pain) pathways (6).
So even though paracetamol has been around for a long time, we still know very little about its effect on the central nervous system.
In one study (7), volunteers were asked to take part in a game which required them to take decisions at appropriate moments. Researchers discovered that individuals who had previously taken paracetamol made more errors than those who hadn’t taken the drug. This confirmed the authors’ theories and reinforced other findings that had suggested use of these drugs modifies our emotions and thought processes.
Again, this appears to be true.
A recent study (8) suggests that the most commonly-used painkillers are significantly less effective when we’ve had had insufficient sleep. Indeed, there may be a strong relationship between sleep deprivation and exacerbation of pain: it’s possible to predict the onset and intensity of pain in healthy individuals simply by taking into account the quality and length of their sleep the preceding night (9-12).
In other words, the more tired you are, the more likely you are to feel pain and the less effective painkillers will be.
This is completely false.
There’s a widespread belief that painkillers only cause minor side-effects – their consequences for the gastro-intestinal system are particularly well-known by the public.
In reality, however, their effects can often be serious, even at therapeutic doses. This is particularly so among the elderly, those with impaired liver function (as a result of regular alcohol consumption or poor diet), individuals taking other medication and those at risk of cardiovascular disease.
Statistics from the United States are truly alarming: 1.9 million Americans are dependent on painkilling drugs, and 19,000 of them die each year as a result of their dependency.
The French equivalent of Which? magazine, the consumer association 60 millions de consommateurs, recently published a report recommending paracetamol over ibuprofen (which has known effects on fertility and cardiovascular health) and aspirin (which poses definite risks to the liver and kidneys). A recent study even suggested that taking ibuprofen increased the risk of death from stroke by 77% compared with a placebo.
The problem is that paracetamol is not very effective for inflammatory pain, as in the case of arthritis … And it too poses an increasing risk of liver problems: a panel of American health professionals recently recommended that the maximum dose in a tablet should be reduced from 1g to 650mg (13).
Fortunately, you know this to be false.
In fact, this approach is becoming increasingly popular and recommended by doctors, even if there is still a long way to go. It is based on a simple principle: that the body is itself perfectly capable of modulating pain with the aid of compounds it either produces or ingests from the diet.
Natural solutions therefore centre on helping the body to improve its availability of endogenous painkillers through self-production and intake from the diet. And since these are structural compounds or ones familiar to the body, they have the considerable advantage of causing no side-effects.
Endorphins are small proteins which reduce the transmission of pain signals to the brain, producing lasting pain relief. They work by binding to opioid receptors (the same ones to which morphine binds) found on the surface of brain cells involved in pain messages.
There are a number of ways in which endorphin production can be stimulated:
b) Endogenous anti-inflammatory compounds like PEA
Inflammation is a basic cellular response which enables the body to initiate processes of repair and defence against aggressors. When it persists, it results in the onset of chronic pain and may be responsible for a number of neurodegenerative diseases.
In order to protect itself from chronic inflammation, the body produces a fatty acid called PEA (palmitoylethanolamide). This small, simple molecule is produced on demand in cell membranes. It’s found in every cell in the body though it is more highly concentrated in brain tissue and areas which are chronically painful (13).
PEA exerts its effects on cells involved in the generation and transmission of pain and modulates the activation of two types of cell involved in neuro-inflammation: microglia and mastocytes (14-15). These properties make it particularly beneficial for relieving neuropathic pain as well as neuro-inflammation (16) which plays a key role in the development of chronic pain (17). Rather than taking complex drugs of which the mechanisms of action are not yet fully established, researchers have thus demonstrated the benefits of PEA supplementation as a natural alternative to relieving chronic inflammatory and neuropathic pain (18-19). Like omega-3, vitamins and melatonin, PEA is not a drug but a molecule found naturally in the body.
c) CBD: why the whole world’s snapping it up
Several studies had previously demonstrated CBD’s ability to make pain more tolerable and less unpleasant but had been unable to explain the precise mechanism involved (1). But as of the end of 2018, the scientific community has been onto something. Dr Gabriella Gobbi and her team have shown that CBD does not act on the cannabinoid receptors called CB1 like THC, but acts instead through a mechanism that binds specific receptors involved in anxiety (serotonin 5-HT1A) and pain (vanilloid TRPV1). “In animal models of neuropathic or chronic pain, we found that low doses of CBD, administered for seven days, relieved both pain and anxiety, two symptoms often associated,” said study author Danilo De Gregorio. “Our research has elucidated the mechanism of action of CBD, added Dr Gobbi, and it shows that it could be used without the significant side-effects of THC!” This represents a major advance in our understanding of phytocannabinoids - compounds which offer new options for relieving back pain, joint pain, and pain associated with trauma …
And finally, there is a third natural solution to pain relief.
When pain becomes chronic, it also becomes complex: nociceptor afferents gradually establish direct links with the limbic system and frontal cortex, two areas of the brain associated with memory and emotions. As a result, pain can persist even when the initial stimuli have completely disappeared (20). This type of pain does not normally respond to medication. In contrast, mental and behavioural strategies designed to manage pain and stress can be highly effective (21) (22)! This is true of mindfulness meditation, yoga and all the Eastern practices that promote a calm outlook on life (Qi Gong, Tai-chi …), cognitive behavioural therapy, sophrology, creative approaches such as visualisation, and relaxing, non-competitive pursuits (painting, gardening) …
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