Archive, Common edible wild plants, Herbal medicine

Foraging plants for the nervous system

Reclaim health autonomy by foraging plants to help the nervous system!

The third in the ‘reclaim health autonomy’ series, revealing how you can easily go out and start foraging plants to help with numerous ailments. This time we look at the nervous system and how foraging for and using wild plants can help many of the disorders and dis-eases of the mind and nerves.

Overview of the central nervous system 

Diagram of the nervous system. Credit: William Crochot. Reproduced under CC.

The brain, as you may well be aware, consists of billions of brain cells, called neurons. Enclosed within a fatty membrane lies what is known as the ‘blood brain barrier’. This is a layer of tightly packed cells with a role to prevent unwanted substances, such as certain drugs, chemicals, and viruses, from entering the brain.

To feed the brain, all nutrients must cross this selective membrane, as fat-soluble molecules, in order to reach the brain cells. Of all the sugars consumed in our diets, only glucose can cross the blood brain barrier.

In between the brain cells are microscopic gaps known as synapses where messages from one cell can be passed to another. These messages are relayed by the numerous monoamine neurotransmitters. They are either made by the brain/body itself from available stores, or are processed directly from diet (given the sufficient availability of zinc, selenium and magnesium together with many ‘B’-vitamins, all of which are needed by our body to process monoamines).

In effect, monoamines are always required from the diet because the brain/body will continually consume available nutrients over a short space of time. Foraging plants with a high nutrient load such as nettles and mallow, can help provide the essential trace elements into the diet.

Ageing reduces the amount of neurotransmitters produced and our bodies ability to respond to them. Estimates from America suggest that 60% of all adults over 40 years of age have some form of neurotransmitter deficiency. The actions (or lack of) by these neurotransmitters are largely responsible for a range of our moods as well as a myriad physiological processes.

Anatomically, the nervous system can be divided into the C.N.S which is comprised of the cerebral hemispheres, cerebellum, brain stem and spinal cord; together with the peripheral nervous system (essentially, the cranial nerves and spinal nerves).

Aside from this classification, the nervous system can also be divided functionally into two distinct systems. The somatic, or voluntary nervous system is associated with impulses to body wall and limbs, while the autonomic nervous system is associated with impulses to the smooth muscles of the viscera (a collective term used to describe the organs within our body cavities).

The autonomic nervous system maintains the physiological equilibrium of the body, yet at the same time it is not completely independent of the C.N.S, because factors that affect higher centres may also influence some physiological functions. The effect of fear and anger, and subsequent release of adrenalin on the pulse rate, is an example of that interdependence.

The important neurotransmitters with regards our moods are the endorphins, serotonin and melatonin (made from the amino-acid tryptophan), as well as dopamine, noradrenalin and adrenalin, made from the amino-acids phenylalanine and tyrosine. They are constantly relayed between nerve cells throughout the nervous system.

To reiterate, these monoamines are themselves absolutely vital, but are of no real help to our nervous system and ipso facto our mental and physical health, unless the essential fatty acids required for each and every cellular membrane, together with aforementioned catalysing metabolic co-factors, are present in the body or diet. This can easily be assisted through foraging plants such as those  listed in the nervous system disorder section.

Some of the important mono-amine neurotransmitters

Tryptophan 

Found in many foods and converted in the body to 5-hydroxy-tryptophan (5-HTP), then finally into serotonin (5-Hydroxy-tryptamine or 5-HT). The main plant foods include bananas, lentils, nuts and many seeds such as sunflower and pumpkin. However, without magnesium and B vitamins to help metabolise tryptophan, then much of this amino acid may be converted into the B vitamin niacin instead.

Serotonin ‘the happy molecule’

5-hydroxytryptamine (5-HT), is one of the most intensively studied neuro-transmitters. Commonly found in the gastro-intestinal tract where it is reportedly used to regulate intestinal movements. Some reports state that up to 80% of available serotonin is located here, as well as throughout the C.N.S.

Serotonin can also be made in the brain from the precursor amino-acid tryptophan. It is known to be associated with various moods and behaviours including reducing appetite, curbing impulses, enhancing mood and promoting sleep. Low levels of serotonin can be responsible for feelings of depression.

Adrenalin, noradrenalin and dopamine

These mood molecules are well known, especially adrenaline (almost universally known as the ‘fight or flight’ molecule.) They are derived from many foods especially the pulses, seeds and nuts. Basically these substances keep you feeling good.

They are stimulating and motivating and help the body and mind deal with stress. Dopamine is known as one of the pleasure molecules, due to it being released when we do something that makes us happy, whether that comes from food or other stimuli.

Gamma-amino-butyric-acid (GABA)

This important inhibitory neuro-transmitter acts as a counterbalance to the stimulating molecules above, helping to relax and calm you down after stress. An imbalance can make it difficult to wind down, relax and sleep

Acetylcholine (ACh)

This helps regulate the speed at which the brain processes information. Satisfactory levels help keep the brain sharp, improving mental alertness and functions such as memory recall. Deficiencies are believed to lead to Alzheimer’s disease. ACh is found in the peripheral and central nervous system. In the peripheral, it activates muscles, enabling them to contract.

Cholecystokinin

This controls the feeling of fullness or ‘satiety’ after a meal is consumed. As food is passed along the digestive tract through the stomach it reaches the duodenum before the small intestine. It is here that signals are sent to the brain telling it the stomach is full. Or at least they should be. Eating too fast can easily negate the action of this neurotransmitter.

Endorphins

These are the body’s own ‘morphine-like’ substances (endogenous morphines). They can produce feelings of euphoria and well-being, creating high self-esteem as well as a reduction in physical and emotional pain.

They are technically classed as a neuromodulator rather than a neurotransmitter by chemists; that is, endorphins modify actions of neurotransmitters through a number of effects associated with pleasure and pain.

When consumed in foods such as chocolate, and if taken regularly and in large enough quantities, a risk of an addictive relationship with the food in question can begin.

Endorphins are known to increase appetite through activating the pleasure and reward areas of the brain. It is now known that abnormal levels of endorphins in the brain can lead to depression or autism.

For example, an autistic patient may produce so much endorphin that they do not need to react to the world outside, whereas a depressed person may not produce enough endorphin to withstand daily stresses and pressures of ‘normal’ life.

Melatonin

This substance is secreted by the pineal gland and is made from serotonin. It controls our sleep/wake cycle with the amount secreted proportionate to the amount of darkness in a 24 hour period. The cycles we experience every day are known as circadian rhythms (circa=about, dia=day) and every organism on the planet regulates its own metabolism within a cyclical framework.

Histamine

This is an important substance for the body’s immune system and allergic response. It is made from histadine, an amino acid found in protein rich foods. High and low levels of histamine are associated with mental health problems.

Symptoms of excessive histamine (histadelia) have been linked with abnormal fears, addictions, compulsive behaviour, confusion, depression, schizophrenia, emotional instability, hyper-activity, insomnia, obsessions and suicidal thoughts.

Low levels of histamine (histapenia) have been found in people suffering with anxiety, hallucinations, paranoia and schizophrenia.

Foods containing high levels of histamine include: aubergines, fermented foods such as soya and sauerkraut, chocolate, pumpkin (Curcurbita pepo), spinach, strawberries (Fragaria spp), tea, and tomatoes (Lycoperiscon esculentum).

Foraging plants to help nervous system disorders

These can take on many guises. A number of different plants greatly assist the following different common nervous afflictions. They will typically have anti-spasmodic and relaxant or sedative effects on the central nervous system.

Anxieties

The various factors behind anxiety need addressing. Plants that help are hops, oat straw or grain, lemon balm, chamomile, valerian, lavender, and lime-flowers.

Depression

Dietary changes may well be all that’s required for many cases of mild depressions. Cases of clinical depression need professional care and are not recommended for un-assisted self-medication. Lavender, oat straw, ginseng (Panax ginseng), valerian, lemon balm, and St. Johns wort are also beneficial for mild depression. Hops, although a relaxant, is contraindicated for depression.

Headaches

These can manifest in different ways in numerous locations. They can stem from any one of a number of psychological and physical dysfunctions, from nervous tensions and stress to digestive disorders and dehydration. Lemon balm, ground ivy, lavender, peppermint, thyme, and valerian can all be of benefit.

Migraines

These extreme headaches are particularly disabling for many people. Feverfew (Tanacetum parthenium) has proven to be a wonder herb for some people with crippling migraines. Traditionally taken as a prolonged course for a month or so, it will often clear up regular migraine headaches. Feverfew grows wild as a naturalised escape of cultivation and can be seen in numerous settings enjoying free-draining soils.

Insomnia

As we age, sleep disorders can become increasingly frequent. Foraging plants such as Chamomile, hops, passionflower, wild lettuce, valerian, oat straw, St Johns wort, and lavender can all help you get a good night’s sleep. All can be infused. Hops and lavender pillows are effective, as is a little lavender oil sprinkled on bed clothes or massaged into the chest or back. Read more on foraging St Johns wort here.

Neuralgia

This is an often debilitating nerve pain caused by trauma and through shingles, diabetes or multiple sclerosis. Oats, both the grain as food and the straw as tea, alongside the topically applied infused oil of St Johns wort are both effective at repairing and restoring the proper function of our nerve endings. You can discover more about Oats in my foragers monograph.

Stress

Our nervous system can be effectively treated with plants, always dependent on the nature of the stress. Even the simple act of foraging plants can help to alleviate stress. Herbs such as oats, valerian, lavender, chamomile, lime-flowers, and borage are all recommended.  Learn all about the lime tree in this article.

 

 

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