Overuse Of Supplements Can Create Health Risks

The Dietary Supplement Health And Education Act of 1994 made it easier for people to acquire supplements and vitamins from health food stores. But since then there has been a proliferation of various products that are sold as supplements and not as drugs. It may give you the impression that all supplements are harmless, but this is not so. There are some supplements like vitamin A where you need to watch that you are not inadvertently overdosing, as toxicity is a problem; calcium supplements are also potentially toxic, if overdone. And amino acid supplements (protein supplements) can lead to an overdose of brain hormones. Here is a sample of some of the supplements that I would want you to watch.

1.Vitamin A toxicity:

Vitamin A is essential for normal night vision, for red blood cell production in the bone marrow and for the immune system. Here is a brief review about its metabolism. But while small amounts are beneficial for the body, high doses are toxic. In the 19th century the Arctic explorer Elisha Kane reported that consumption of polar bear liver caused severe headaches, drowsiness, irritability and vomiting within a few hours of ingesting it.

It is now known to be due to “pseudotumor cerebri”, a condition that mimics a brain tumor, but is caused by an acute overdose of vitamin A contained in liver (Ref. 1).

In the US where people eat enough meat, fish and dairy products, there is no overt vitamin A deficiency. Read this link to avoid overdosing with vitamin A in multiple supplements.

Overuse Of Supplements Can Create Health Risks

Overuse Of Supplements Can Create Health Risks

2. Vitamin C:

Vitamin C is an important antioxidant vitamin and is needed as a co-factor for many metabolic reactions. It is participating in the production of collagen and connective tissues, helps with fatty acid transport and is necessary for the synthesis of neurotransmitters in the brain (Ref.2). The lack of vitamin C is known as scurvy; symptoms include bleeding gums from fragile capillaries, delay in wound healing and impaired bone metabolism. Although in the earlier research it was hoped that vitamin C would prevent colds and cure cancer, more recent reevaluations found that it does not prevent you from getting colds, but it accelerates the recovery from colds by cutting down the recovery time by as much as 25 to 30% and it also does have some cancer protective effects (Ref.2). Higher doses seem to be more beneficial, but 1500 mg per day seems to now be the consensus of a reasonable upper dose limit per day.

What about kidney stones? Several studies in the past have warned about vitamin C being broken down in some people into calcium oxalate kidney stones. Here is a brief review of the literature with regard to kidney stone formation. A study regarding the DASH diet, which is used for people with high blood pressure, showed that the incidence of kidney stones is almost half for both men and women compared to controls on a normal North American diet.

There has been a concern among the medical community that vitamin C as a supplement would increase kidney stones (oxalate stones). However a 2014 study showed that when both vitamin C and vitamin E are taken as supplements, the kidney stone formation goes down.

Many inhabitants of industrialized countries including the population in the US and other countries are magnesium deficient and this can be a major factor for forming calcium oxalate stones. But it has been known for decades that those who develop kidney stones excrete more oxalates in their urine (so-called “oxalate excreters”). Here is a 1996 study that measured this in detail.

If you are taking in a lot of green smoothies from green leaf vegetables (spinach, kale, Swiss chard) that are high in water-soluble vitamins, you may not require any vitamin C supplements. In other words, think about what else you do and eat and add it up, so you do not exceed a total of 1500 mg to 2000 mg of vitamin C per day.

If you are taking in a lot of green smoothies from green leaf vegetables (spinach, kale, Swiss chard) that are high in water-soluble vitamins, you may not require any vitamin C supplements. In other words, think about what else you do and eat and add it up, so you do not exceed a total of 1500 mg of vitamin C per day.

3. Calcium supplements:

Calcium is a key mineral in the body, important not only for healthy bone structure, but also to balance the electrolytes within the blood, in the extra cellular fluid space and within our cells. If calcium is low, the brain is more prone to seizures and the heart can produce dangerously irregular heart beats. We definitely need a balance of calcium! Because calcium is so central to our wellbeing, several factors work together to keep our calcium levels stable: the kidneys, the thyroid, the parathyroid glands, the adrenal glands, the bone as a reservoir of calcium, the gastrointestinal tract for absorption and a good, balanced nutrition. The chapter on “Vitamins and Minerals” of Ref.3 points out that 4000 mg of calcium per day definitely causes toxicity (hypercalcemia and milk-alkali syndrome).

Absorption is dose dependent meaning that only 500mg of calcium carbonate is absorbed at a time. Vitamin D3 deficiency leads to reduced calcium absorption. But with high doses of vitamin D3, which is now often recommended, more calcium is absorbed, so it is important not to take too many calcium supplements. They can also interfere with iron and zinc absorption and when more than 2600 mg of calcium is taken magnesium absorption is inhibited as well. Calcium can interfere with thyroid hormone supplements (take 4 hours apart) and may reduce the effect of calcium channel blockers, drugs used for angina or high blood pressure.  There is a balance between calcium stored in bone (99% of total body calcium) and the circulating portion of 1% of calcium in the blood. The parathyroid hormone and calcitonin are also involved in this balance. Hypercalcemia is the condition when calcium is too high. Common causes are the improper use of diuretics (thiazide diuretics), overuse of calcium carbonate supplementation (often for osteoporosis) and overuse of vitamin D3, which increases the absorption of calcium (Ref.3). See your family doctor for blood tests and advice what to do in your case.

4. High protein diets and protein (amino acid) supplements:

Many protein supplements are available through health food stores and vitamin stores. The advertisers often state that our food would be substandard and these supplements would help “to regain strength”.  Athletes hope to get stronger muscles from amino acid supplements because they are the building block for protein that builds up muscles. Fact is that no supplements are needed when you eat balanced meals containing meat and fish and you exercise regularly. The protein in your food will be broken down into amino acids and your body metabolizes this into your own protein. Here is a website that reviews the subject of supplementation with amino acids.

It is clear from this that this is a rather complex problem. Vegetarians may require these supplements to replace protein for the missing meat intake. But the rest of us have to guard ourselves against overdosing with too much meat, amino acids supplements or protein supplements.

High protein diets (Atkins diet and others) have been glorified as being helpful for weight loss. But the long-term effect of such diets lead to chronic kidney damage in those with diabetes and high blood pressure as evidenced by protein leakage in the urine (called ”microalbuminuria”, Ref.4).

According to this reference the average protein requirement is 0.6 g of protein/kg body weight/day. This text comments that this would be compatible with the World Health Organization (WHO) recommendation for protein intake. For a person weighing 140 lbs. this translates into about 50 grams of protein per day. Here is a website that explains the upper limit of meat intake with the example of an 8-ounce portion of top sirloin steak.

Protein supplements have become very popular, but you need to be careful when you supplement with this that you do not get an overdose of amino acids. Amino acid profiling has been useful for physicians and naturopaths to examine deficiencies in children or adults checking for essential amino acids in the blood.  However, in the industrialized countries such as the US, Canada and others the larger concern is now the overuse of meat in our food (e.g. Atkins-like diets) and protein supplements. The same amino acid screening tests will find several of the ingredients (amino acids) in these protein supplements to be too high. In this case it is imperative to stop the protein supplements to prevent amino acid toxicity.

This study warns that not enough is known how performance-enhancing supplements affect the metabolism of the body. There are discussions that perhaps upper limits for amino acid supplements need to be established:

5. Creatine supplementation:

Other supplements of concern are creatine supplementation in the sports-minded and in athletes who want to build up muscle mass. Creatine is synthesized by the liver form amino acids derived from fish and meat that is broken down into the amino acids arginine, glycine and methionine. So, there is no shortage, but athletes and sports minded people want to push the envelope and take in additional creatine that helps their energy metabolism (ATP production) in the muscles to increase their performance (Ref. 5) Creatine is vital for the brain, the heart, the kidneys and the eyes (retina). It is a buffer for lactic acid during anaerobic exercise. Some of the side effects are muscle cramps, diarrhea, fluid retention and kidney failure when exposed to high heat and dehydration. There are no long-term studies of the use of creatine supplements, yet some athletes are taking them long-term.


We are tempted by various merchants and infomercials to take in more and more vitamins and supplements including protein and amino acid supplements. But when you eat well-balanced meals, preferably organic food, you already have enough protein, nutrients, calcium, vitamin C and vitamin A contained in food. So you may be inadvertently putting a strain on your kidneys that have to eliminate whatever it is that is too much for your body to take. Your liver may also be quietly working overtime as well. Your brain gets overactive by the surplus of amino acids that are utilized by the brain to make brain hormones. Your system can only take so much; at one point a surplus of supplements will make you sick! So, be vigilant and think about what your regular food intake already provides. Do you really need that supplement or do you already get enough from your food intake? Are you falling for some marketing scheme? Remember, you are the steward of your own health!


1.Shannon: Chapter 69: The Vitamins. Haddad and Winchester’s Clinical Management of Poisoning and Drug Overdose, 4th ed.© 2007 Saunders

2. Mandell: “Water-Soluble Vitamins”. Mandell, Douglas, and Bennett’s Principles and Practice of Infectious Diseases, 7th ed. © 2009 Churchill Livingstone

3. Rakel: Chapter “Disturbances in Calcium and Phosphate” and chapter entitled “Vitamins and Minerals”. Textbook of Family Medicine, 8th ed. © 2011 Saunders

4. “High Dietary Protein Intake” in “Taal: Brenner and Rector’s The Kidney”, 9th ed. © 2011 Saunders

5. DeLee: DeLee and Drez’s Orthopaedic Sports Medicine, 3rd ed. © 2009 Saunders

Last edited April 30, 2014

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Treatment For Alzheimer’s Failed, But Prevention Succeeds

Recently another news story about a failed drug against Alzheimer’s disease (AD) went through the news media as shown in this link.

Donepezil, galantamine, rivastigmine and memantine are the most common drugs used to attempt to treat Alzheimer’s as this review explains. None of these drugs are a real breakthrough with regard to truly curing AD, as the drugs only achieve a few months of delay in the eventual deterioration of the AD patient’s symptoms. On the other hand there is an overwhelming accumulation of data in the last few years showing that many different factors can prevent AD and dementia. Below I am reviewing all these preventative factors and steps.

Genetic and epigenetic factors in Alzheimer’s disease

Early onset Alzheimer’s disease occurs between 30 and 60 years of age. It is due to a genetic predisposition (mutations on genes of chromosomes 1, 14 and 21). Only about 5% of all AD cases are caused this way. The remaining 95% of Alzheimer’s cases are due to late-onset Alzheimer’s disease. Here the causation is due to a combination of genetic, environmental and lifestyle factors. One genetic risk factor in this group is important, namely the apolipoprotein E gene (APOE), which is located on chromosome 19. There are several forms of APOE as this review explains. It also states that there is so much variation between the various APOE forms and even the worst form of this does not necessarily mean that the person who has this will come down with late-onset Alzheimer’s disease. So APOE is presently only used in research projects. Your doctor will only order genetic tests in people who have a strong family history of early onset AD.

There is another genetic marker, the CYP46 gene that was found to be present in some late-onset AD patients. If it is combined in a patient with the APOE gene, there is a much higher chance of developing AD as this review shows.

Epigenetic factors are probably more important than genetic factors for most cases of late-onset AD, as this review explains. Another review came to the same conclusion.

What are epigenetic factors? Exercising, replacing missing hormones, using a calorie restricted, only 15-20% fat containing diet; and taking supplements as listed below that will keep harmful genes in the “off” position and protective genes in the “on” position. Taking these preventative steps is probably more powerful than using any of the presently available medications mentioned above.

Treatment For Alzheimer’s Failed, But Prevention Succeeds

Treatment For Alzheimer’s Failed, But Prevention Succeeds

Exercise, diet, control blood pressure

As already mentioned, these are some of the powerful epigenetic factors that will prevent AD down the road. Controlling blood pressure has long been known to improve cognitive function. It is now evident that there seems to be a problem with microcirculation in brain tissue before it comes to neurodegenerative changes of AD and the underlying deficiency in nitric oxide production in the lining of the diseased arteries. Other research has shown that a lack of nitric oxide (NO) production is also the underlying problem with hypertension.

Green vegetables such as kale, spinach, also cabbage varieties and red beets are a source of nitric oxide and have also been shown to prevent AD at the same time.

Add to this exercise and you have a winning combination for the prevention of AD. You guessed right: exercise increases NO production from he lining of your arteries. When people age their lining of the arteries does not produce as much NO as in younger years. However, there is a supplement available, Neo40 Daily, that can be taken twice a day to compensate for this.

Here is another report about a 30% to 40% reduction in the incidence of AD when people do regular, simple exercises.

More good news about fruit and vegetables: tomatoes, watermelons, pink guava, pink grapefruit, papaya, apricot and other fruit all contain lycopenes, which have been shown to prevent AD.

Recently a new testing tool in combination with a PET scan of the brain has been developed, which may help the treating physicians to assess improvement or deterioration of an AD patient objectively using this method. However, this is still considered to be only a research tool at this time.

Supplements to prevent Alzheimer’s disease

The following brain-specific nutrients play a part in the prevention and treatment of AD (according to Ref.1):

1. B-vitamins: they are important to support the energy metabolism of brain cells.

2. Vitamin C: this has antioxidant properties and prevents brain cells and supportive glia cells from oxidizing.

3. Vitamin E in the form of mixed tocopherols: together with vitamin C has been shown to prevent Alzheimer’s disease

4. Phosphatidylserine (PS), with an intake of up to 300mg/day: counteracts and prevents memory loss.

5. Coenzyme Q10 (ubiquinone), 100mg/day (it would be safe to take 400 mg per day, which is also cardio protective): stabilizes the mitochondria of brain cells and heart muscle cells. It is a powerful neuroprotective agent and supports ATP production (energy metabolism of brain cells).

6. Ginkgo (Ginkgo biloba), at a dose up to 240mg/day: increases micro vascular circulation, neutralizes free radicals from oxidation and improves short-term memory.

7. Omega-3 fatty acid and DHA, 1500mg/day: has anti-inflammatory properties.

Other nutrients that hold promise are:

8. Huperzine A, 100 to 200mg/day: natural anticholinesterase inhibitor, derived from the Chinese club moss, surpasses donezepil according to studies by doctors in China

9. Vinpocetine, 2.5 to 10mg/day: comes from the periwinkle plant, increases cerebral blood flow and stimulates brain cell metabolism

10. Turmeric extract (curcumin) is very beneficial in reducing tau protein deposits in AD.

All these statements and dosages are cited from Ref.1.

Hormones to prevent Alzheimer’s disease

According to Ref. 1 there are certain hormones that can prevent AD: DHEA, pregnenolone, estrogen (bioidentical estrogen only).

  1. DHEA is persistently low in AD patients and replacement with DHEA at 50 mg daily has shown improvements in muscle strength and energy of AD patients.
  2. Pregnenolone has been shown to be a powerful memory enhancer in animals and humans alike.
  3. Estrogen, if taken as bioidentical estrogen cream (Bi-Est) can improve brain function. Estrogen is a strong epigenetic switch that keeps a woman mentally younger for longer, but has to be balanced with bioidentical progesterone cream to prevent breast cancer and uterine cancer. A study showed that estrogen replacement early in menopause will cut down on the heart attack rates, but it is also known, particularly when given as bioidentical hormone cream to prevent AD.
  4. In addition progesterone has been described to be of value in the aging woman to preserve brain metabolism.
  5. Testosterone is known to protect against Alzheimer’s disease in the aging male.
  6. Melatonin at a starting dose of 1 mg to 3 mg at bedtime often helps to restore the disturbed sleep pattern, but also augments the effects of the other hormones (Ref.1).

Removal of toxins, particularly mercury

Mercury is extremely toxic in minute amounts and affects brain cells preferentially. Intravenous vitamin C/glutathione treatments as described in this blog will remove mercury from your system including the brain.

It may take 20 to 30 such treatments in weekly intervals followed by a maintenance program every two to three weeks to remove mercury from the body.

Other heavy metals can accumulate in the brain as well and must be removed. This is described here in more detail.


There have been major breakthroughs in prevention of Alzheimer’s disease and dementia over the past few years, many unnoticed by the media. The search is still on for an effective drug that would treat AD when it is present. However, this may be 10 or 15 years away and we cannot afford to wait that long. Instead I suggest that people should embrace the concept of preventing AD by using as many of the factors described above. Both at the 2011 and the 2012 Anti-Aging Conferences in Las Vegas several speakers pointed out that a combination of several preventative factors will be much more effective than one factor alone and they estimated that about 80% of AD could be prevented this way.


Ref.1. Rakel: Integrative Medicine, 3rd ed., Copyright © 2012 Saunders, An Imprint of Elsevier. Chapter 9 – Alzheimer Disease. Integrative Medicine: “Kirtan Kriya, Telomeres, and Prevention of Alzheimer Disease”, by Dharma Singh Khalsa, MD

Last edited Dec. 18, 2014