News

Aluminium may harm fertility

Aluminium and fertilityEndocrine disrupting chemicals are known to be  determinants of disease so this report has caught my eye.  Underneath the report is some information about sources of Aluminium – and perhaps give ideas on how to  reduce excess exposure.

Over the past decades, male fertility problems have increased significantly, which has previously mainly been linked to endocrine active components. A study from the United Kingdom and France now indicates a new potential factor: Aluminium. According to the results published in “Reproductive Toxicology”, there is a link to lower sperm count.

Scientists from the universities in Lyon, Saint-Etienne and Keele examined semen samples from 62 donors in France using fluorescence microscopy. The average aluminium content among the study subjects was found to be high at 339 ppb – with individual persons demonstrating levels as high as 500 ppb.

Analyses showed a statistically significant inverse relationship between aluminium content and sperm count. The more aluminium was found, the lower the sperm count.

Over the same time period during which male fertility had declined exposure to aluminium had increased, said study leader Christopher Exley from the University of Keele. The significant contamination of semen by the light metal therefore indicates that it plays a decisive role in reduced fertility, he said.

ALUMINIUM

(Excerpted from Staying Healthy with Nutrition ISBN: 1587611791)

Aluminum has only recently been considered a problem mineral. Though it is not very toxic in normal levels, neither has it been found to be essential. Aluminum is very abundant in the earth and in the sea. It is present in only small amounts in animal and plant tissues. However, it is commonly ingested in foods and in medicines, such as antacids, and is used in cosmetics. Many scientists feel that, because of its prevalence in the earth and its common uses, it is not actually very toxic.

Aluminum is not really a heavy metal-that is, it is low (number 13 on the “periodic” table of elements) in molecular weight-so it does behave differently from metals such as lead or mercury. Recent investigations, however, implicate aluminum toxicity in Alzheimer’s disease and other brain and senility syndromes. The evidence of aluminum’s toxicity or essentiality is not conclusive as yet.

The amount of aluminum in the human body ranges between 50 and 150 mg., with an average of about 65 mg. Most of this mineral is found in the lungs, brain, kidneys, liver, and thyroid. Our daily intake of aluminum may range from 10-110 mg., but the body will eliminate most of this in the feces and urine and some in the sweat. With decreased kidney function, more aluminum will be stored, particularly in the bones.

Sources: For most people, the greatest aluminum intake comes from food additives. Sodium aluminum phosphate is an emulsifier in processed cheese, potassium alum is used to whiten flour, and sodium silicoaluminate and/or aluminum calcium silicate are added to common table salt to help it run freely and not cake. In the average diet, 40-50 mg. a day may come from foods.

With use of aluminum pots and pans and aluminum foil, some aluminum leaches into food, especially with acid foods such as tomatoes or rhubarb. Cooking with fluoridated water in aluminum cookware increases the aluminum in the water and the food; still, the amounts we obtain in this manner are small in comparison with those from additives. Aluminum salts used in antiperspirants are not a major contaminant either, unless these products are overused. (Aerosol sprays, however, should be avoided for environmental toxicity reasons.) Antacids containing aluminum hydroxide can be a big source if they are taken regularly or abused, as antacids sometimes are. Some children’s aspirins have been found to contain aluminum as well.

Methods of toxicity: Aluminum is probably the least toxic of the minerals discussed in this section, although the concern is that it has become so pervasive and is now found in higher levels in human tissues. It is not clear how aluminum functions or interferes with activities in the human body, possibly through some magnesium functions. It may reduce vitamin levels or bind to DNA, and it has been correlated with weakened tissue of the gastrointestinal tract. In Alzheimer’s disease, there are increased aluminum levels in the brain tissue and an increase in what are called “neurofibrillary tangles,” which tend to reduce nerve synapses and conduction.

Oral aluminum, as obtained from antacids, can bind pepsin and weaken protein digestion. It also has astringent qualities, and thus can dry the tissues and mucous linings and contribute to constipation. Regular use of aluminum-containing deodorants may contribute to the clogging of underarm lymphatics and then to breast problems such as cystic disease. Ann Louise Gittleman, a prominent nutritionist, calls aluminum a “detrimental protoplasmic poison.”

(Excerpted from Staying Healthy with Nutrition ISBN: 1587611791)

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