Kidneys: The Root of Life
The kidneys are two of the most important, yet under appreciated organs in the body, that are all too often bearing the brunt of our toxic lifestyles. They are one of the main detoxification pathways of our body, but are never the focus of our attention when it comes to cleansing. The fact is that they are our workhorse, yet we do not treat them with care nor do we ever consider their role in our health.
Surprisingly the kidneys are at the root of an array of very common ailments such as fatigue, hair loss, slow growing nails, extra water weight or edema, foggy brain, high blood pressure, lower back pain and puffy eyes. With the simple change in diet paired with the right kidney nutrients, the majority of people receive instant relief from these symptoms. The problem occurs when we try to address these ailments through other measures such as full body cleanses, which only serve to cause more stress on the kidneys. Therefore, it is always vital for us to start first with the kidneys, before we address any other symptom in the body. So let us take a closer look at these very delicate organs and how they greatly influence and control so many functions in our bodies.
What are the Main Functions of the Kidneys?
The main function of the kidneys is that of forming urine and through that function, the body is able to maintain homeostasis. Homeostasis is the mechanism that keeps the body’s environment stable and constant which is vital to life. Through this process, the blood is able to stay clean and the body can efficiently get rid of waste while maintaining healthy fluid levels and blood pressure levels.
1. Urine Formation
Through the formation of urine, the kidneys are able to one of the most important detoxification organs in the body. The formation of urine involves, filtration, reabsorption and secretion.
Filtration- The kidneys filter water and dissolved substances (sodium, nutrients, glucose) out of the blood.
Reabsorption- Water and dissolved substances are separated from waste products in the urine and then filtered back into the blood system for use.
Secretion- Toxic waste products such as hydrogen ions, potassium ions, and drugs are secreted into the urine for excretion.
2. Acid/Base (pH) Balance
The kidneys play a primary role in maintaining acid base balance in the body by selecting which ions to retain and which ones to excrete. This allows the body’s total acid burden to be constant, as the urine’s acidity fluctuates to accommodate the balance. If the blood is too acidic, meaning that there is an excess of hydrogen ions, the kidney moves these ions to the urine.
The kidneys help to maintain the blood plasma at a neutral pH 7.4. By regulating the body’s pH, the kidneys help to maintain an environment, which prevents diseases from inhabiting the body and promotes the efficient functioning of all bio-systems.
3. Blood Volume and Pressure
The kidneys meticulously adjust the volume and concentration of the urine to accommodate changes in the body, including variations in your daily food and beverage intake. These adjustments on whether to retain or release substances or water come from ADH (antidiuretic hormone), renin, angiotensin and aldosterone. Therefore, the kidneys are a vital component to maintaining healthy blood pressure levels.
ADH and Water Retention: When blood volume or pressure falls too low, or when the fluid outside our cells becomes too concentrated, the pituitary gland releases ADH. ADH tells the kidneys to reabsorb water and increase urine concentration. Consequently, if you are dehydrated, the kidneys will excrete less water.
Renin and Sodium Retention: When blood pressure gets too low, an enzyme called renin is released. Renin causes the kidneys to reabsorb sodium, which causes water retention. This restores normal blood pressure and volume.
Angiotensin and Blood Vessel Constriction: Renin also activates angiotensin, which is a powerful vasoconstrictor. Meaning it will cause blood vessels to constrict, increasing blood pressure.
Aldosterone and Sodium Retention: When angiotensin is released, it stimulates the release of the hormone aldosterone from the adrenal glands. Aldosterone tells the kidneys to retain more sodium and therefore water, restoring normal blood pressure in the body.
4. Fluid and Electrolyte (salt) Balance
The kidneys control the body’s water content through the “water-retaining hormone” ADH (antidiuretic hormone). If ADH is present, the body decreases the amount of urine formed and therefore less water is lost. If ADH is not present, the amount of urine formed increases, and more water is lost. This is a very delicate balancing act.
The control of electrolytes (salt) is monitored through the hormone Aldosterone (salt and water retaining hormone). If sodium is low, aldosterone stimulates the kidneys to reabsorb sodium, therefore increasing water reabsorption, and decreasing water lost from urine. Therefore, any dysfunction in the kidneys can cause symptoms such as water retention and edema.
5. Waste Excretion
The main function of the kidneys is to excrete toxins and waste products that accumulate in the blood. Therefore, the kidneys are a blood cleanser. One of their main jobs is excreting nitrogenous waste products, such as ammonia and urea, which are byproducts of protein breakdown. If the kidneys are not functioning properly, often due to high intakes of animal proteins, their ability to filter out these toxins is greatly reduced. This leads to problems such as gout and kidney stones.
6. Hormone Secretions and Red Blood Cell Production
One very important hormone produced by the kidney is called erythropoietin. It plays a key role in the production of red blood cells in the bone marrow as well as hemoglobin. It also plays a role in smooth muscle fiber proliferation; wound healing and can increase iron absorption.
When the kidney detects that the number of red blood cells in the body is declining, it produces erythropoietin. This hormone is released into the bloodstream and goes to the bone marrow. This triggers the production and release of more red blood cells.
7. Vitamin D Utilization and Bone Health
When the body comes into contact with sunlight, the UVB wavelengths react with 7-dehydrocholesterol, a precursor from cholesterol. This reaction forms the provitamin, Vitamin D3. In order for this provitamin to be utilized as Vitamin D, it must go through two reactions, one with the liver and one with the kidneys. Therefore, it is a vital job of the kidney to maintain healthy vitamin D levels in the body. Once vitamin D is activated by the kidneys, it acts as a hormone, promoting bone growth and maintenance by maintaining blood concentrations of calcium and phosphorus.
The Kidneys Role in Chinese Medicine
Chinese Medicine tends to have a more holistic view of the body and looks at the body as a whole and its interactions with its environments. Chinese Medicine believes that kidneys are greatly affected by emotions, including fear and unresolved anger. They see the kidney as the “Minister of Power” or the “Root of Life.” Meaning that they are an important reservoir of essential energy. These viewpoints can be very helpful so here are some perspectives from Chinese Medicine.
Peak Energy Times 5-7 am
- Governs birth, growth, reproduction, development, sexual vitality, and aging
- Controls willpower- expresses ambition and focus
- Controls bone, particularly lumbar spine and knees
- Produces marrow
- Nourishes brain to sustain concentration, clear thinking and memory
- Facilitates inspiration
- Controls teeth, head hair, ears (hearing) and equilibrium
- A healthy kidney is expressed as gentleness, groundedness, courage, willpower and endurance
Signs of Deficiency:
- Indecisiveness, fear in pit of stomach
- Cold feet and legs
- Abundant swelling, edema
- Bladder issues
- Fearfulness, anxiety, antisocial tendencies
- Chronic fatigue
- Lack of will, impatience, discouragement, laziness
- Low sex drive
- Sciatica, lumbago
- Inflammation, musculoskeletal irritation
- One dreams of drowning, swimming after a shipwreck
- One dreams of being immersed in water
- One feels like the back and waist are split apart, spine is detached from body
The Kidneys: The Missing Link in Cleansing Protocols
- Loss of Hearing or Ringing in the Ears
- Social Anxiety, ADD, ADHD
- Low sex drive
- Thin Skin
- Weak Nails
- Foggy Head
- Low Back Pain
- Low Energy
- Terrible Balance, clumsiness
- Feelings of Fear
- Poor Physical Development
- Bladder Issues
- Kidney Stones