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NITRATES AND EYE PRESSURE

corsaking

Well-known member
A few months back i went for an eye test .iT coincided with a period in which i was taking VPX Powerrshock which is amino nitrates and creatine nitrate.Both these supplements i had been running for sometime .

During the eye test , one of the things that are checked , is interoccular eye pressure ie the amount of pressure on the optic nerve.It has to be within a certain range to be ok -mine wasnt and the eye test stopped and i got referred to the hospital for further examination.

i searched on the internet , and for the life of me , carnt find it again, and did find a link between eye pressure and nitrates but when it was too late.
i continued with the supplements not knowing of the connection.The eye clinic had given me drops to bring the pressure down but it hardly moved, and i had to go back after one month.

During this time , i had stopped taking all supplements containing nitrates.

On return to the eye clinic , the pressure had dropped dramatically and is now in the normal range.

It could be coincidence or it could be that the eye drops had taken effect but i know im not likely ever to take a supplement containing nitrates just in case it raises the pressure again

so my advice would be to those taking a supplement with nitrates in it , is go get your eyes checkedContinual high eye pressure on the optic nerve can lead to blindness .
i might have been unlucky , you might be ok but dont take the chance.
 
So does caffeine. I'm not equating the two, just saying.

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I thought everyonew knew nitrates are BAD for you.
I try to stay away from them myself.
 
Blergs said:
I thought everyonew knew nitrates are BAD for you.
I try to stay away from them myself.
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No.

Regular consumption of beet juice may boost athletic performance, increasing endurance while lowering blood pressure and reducing fatigue, according to a study conducted by researchers from the University of Exeter and published in the Journal of Applied Physiology.

On two separate occasions, the researchers had the same group of eight men between the ages of 19 and 38 drink 500 milliliters of an unknown beverage for six consecutive days, then perform a series of standardized tests on an exercise bicycle. On one occasion, the beverage was 500 milliliters of organic beetroot juice; on the other, it was a placebo of blackcurrant cordial.

The researchers found that men who drank the beetroot juice were able to cycle for 16 percent longer (92 seconds) than those who drank the placebo. This, in turn, would allow a cyclist to cover a set distance 2 percent faster. Participants also had a lower resting blood pressure after drinking beetroot juice than they did after drinking the placebo.

The beetroot juice apparently caused the body to burn oxygen more slowly, thus staving off tiredness longer.

"We were amazed by the effects of beetroot juice on oxygen uptake, because these effects cannot be achieved by any other known means, including training," said researcher Andy Jones. "I am sure professional and amateur athletes will be interested in the results of this research.

Jones noted that the research might also lead to benefits for people who have diseases related to lack of physical activity, such as metabolic syndrome, cardiovascular disease and respiratory diseases.

"I am also keen to explore the relevance of the findings to those people who suffer from poor fitness and may be able to use dietary supplements to help them go about their daily lives," he said.

The researchers do not know why beets cause the observe effect, but they believe that the nitrates in the vegetables might slow the body's oxygen uptake.

"Certainly, a diet high in nitrate-rich fruits and vegetables is good for your heart health and this study provides further evidence of this," Jones said.

Sources for this story include: news.bbc.co.uk.

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ISHS Acta Horticulturae 563: International Conference on Environmental Problems Associated with Nitrogen Fertilisation of Field Grown Vegetable Crops
HEALTH EFFECTS OF NITRATES AND NITRITES, A REVIEW
Authors: A. boink, G. Speijers
Keywords: methaemoglobinaemia, hypotension, hypertrophy, adrenal zona glomerulosa, toxicology, carcinogenesis

Abstract:
In this presentation the acceptable daily intake (ADI) of nitrate is discussed together with the effects of nitrate and nitrite as found in toxicological studies. The toxicity of nitrate per se is low but in humans 5-10 % of nitrate is converted into the more toxic nitrite by salivary or gastrointestinal reduction. The toxic effects of nitrite are methaemoglobinaemia and fall of blood pressure. Nitrite - induced hypertrophy of the adrenal zona glomerulosa is considered as a physiological adaptation to repeated episodes of low blood pressure and not as a toxic effect. There is no evidence that nitrite is carcinogenic. It is concluded that the current recommendations for nitrate intake pose no threat for human health. Incidental intake exceeding the ADI causes negligible risk. However, high nitrate intake for a prolonged period should be avoided. Invalid Link Removed



7.2 Toxicity

7.2.1 Human data

7.2.1.1 Adults

The lethal oral dose of potassium nitrate for an adult has been estimated to be between 4 and 30 g (about 40 to 300 mg NO3- kg). It has been reported that adults have tolerated large doses of nitrate as sodium and ammonium salt (> 100 mg NO3-/kg) in some cases repeated for several days for medical or experimental purposes with only minor effects in some subjects (light methaemoglobinemia, diarrhoea, vomiting). Death and severe effects of nitrate ingestion are generally associated with doses above 10 g NO3-.Invalid Link Removed Human data
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there are hundreds of thousands (or even millions) of cardiac patients who receive nitrates day in day out as a treatment for their coronary syndrome.
I am not aware of any investigation or study that would indicate reduced life-expectany, higher cancer incidence rates or any other malaise in coronary patients receiving nitrates vs. those who do not receive them. If nitrates were that dangerous, then all these patients would be exposed to a significantly higher risk for dementia, cancer, diabetes etc. However, apparently they aren't.
That tells us alot about the potential harm from nitrates or the lack thereof.
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Just food for thought.
 
Nitrate is a fairly generic term. It can refer to anything from the nitrate drugs used to treat heart conditions to sodium nitrate which is often associated with nitrates in foods such as hot dogs. Punching "nitrate" into pubmed is going to give you confusing results.
 
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