Vitamin Information Center

Over the past few years the sun has gotten a bad rap. Too much sunshine can put you at risk for skin cancer. And an overdose of sun can also lead to nasty sunburns, or even heatstroke.

But the sun isn’t always bad for the body. Scientists have known for years that the sun is a great source of vitamin D. This vitamin naturally boosts the immune system, your body’s defense against disease. Now mushrooms bathed in ultraviolet (UV) light — like that from the sun — can help you get some of this valuable vitamin.

Each year there are more and more studies released that suggest if you want to be healthy, vitamin D is where it’s at. Vitamin D strengthens your heart and bones, and can prevent asthma and some forms of cancer and diabetes.

Some foods, like fish and eggs, are naturally brimming with the vitamin. And others, like milk and some cereals, are fortified with vitamin D. But you would need to consume a lot of milk and cereal to get your daily dose of vitamin D. Sunlight still reigns king as the best source for vitamin D.

Recently scientists have shown that specially treated mushrooms could give people a vitamin D boost. U.S. Department of Agriculture researchers in California treated portabella mushrooms to suntanning sessions of up to 18 minutes. The mushrooms didn’t develop a bronze glow or complain of heat stroke though. Instead each mushroom produced nearly 4 micrograms of vitamin D per gram of tissue. When white mushrooms were given similar sun treatments, these fungi boasted extra vitamin D, too. Now both kinds of vitamin-infused ‘shrooms are on the market. So if you like mushrooms, you could munch your way to a higher daily dose of Vitamin D.

Depending on a person’s age, people should get between 5 and 15 micrograms (or 200 to 600 international units) of vitamin D each day. Without these amounts, people are prone to get diseases like rickets, which causes distorted, soft bones. These numbers, though, are really just a minimum. Now some scientists suggest it’s better to get as much as five times the recommended vitamin D dose each day.

Having more foods with Vitamin D is a good thing, since there are also several factors that make it hard to get enough of the vitamin from just the sun.

One factor influencing elderly people’s vitamin D intake is that they often spend less time outdoors. Therefore, they need more vitamin D in their diet. And if you spend a lot of your time indoors, playing video games or on the computer, you may need extra vitamin D from your food, too.

Skin color and weight also help determine a person’s vitamin D needs. Darker skin filters out more of the sun’s UV light, so people with darker skin need more sun exposure to make necessary amounts of vitamin D. For unknown reasons, heavier people also need a greater amount of UV light to enable vitamin D production.

And latitude — how far north or south you live — can play a major role in the sun’s ability to help you get adequate vitamin D amounts. As you get farther away from the equator, the amount of UV-filtering atmosphere increases. This means that at higher, more northern latitudes, people get less UV rays. So, if you live in a state like Alaska, most of the year you can’t get enough sun to trigger the vitamin’s production by your skin.

Eating foods enriched with vitamin D or taking a daily vitamin may not be as satisfying as breaking out your bathing suit and lying in the sun. But the right foods and supplements can help keep you healthy until summer’s rays are here again.

Men who have their diet based on green vegetables, fruits and lentils have a higher chance of fathering a healthy child, a new research shows.

Scientists at the University of California, Berkeley and the Lawrence Berkeley National Laboratory found that men with relatively low levels of folate (a B Vitamin) had increased risks for sperm containing either too few or too many chromosome, a condition known as aneuploidy. This condition is connected to failure to conceive, miscarriages, and children born with conditions such as Down’s syndrome, Turner’s syndrome and Klinefelter’s syndrome.

“We looked at sperm to find different kinds of genetic abnormalities. The abnormalities we looked at here were having too few or too many chromosomes,” lead researcher Brenda Eskenazi, a professor of maternal and child health and epidemiology and director of the Center for Children’s Environmental Health at Berkeley’s School of Public Health said, according to the Washington Post.

The researchers analyzed sperm samples from 89 healthy, non-smoking men and questioned them about their daily intake of zinc, folate, vitamin C, vitamin E and beta-carotene. They found men with the highest intake of folate or folic acid (between 722 and 1150 micrograms a day) had 20 percent to 30 percent lower frequencies of aneuploidy compared to men with a lower intake. No correlation was made between the other vitamins and sperm aneuploidy.

The current recommended daily intake of folate for men over the age of 19 is 400 micrograms. Health experts recommend women of childbearing age maintain a healthy intake of folate because it is essential for healthy fetal developmental and to prevent neural tube birth defects such as spina bifida or anencephaly (severe type of brain damage). That’s the reason why folic acid is now added to bread, cereal, flour and other grain products in the U.S.

This study is the first to “say that male diet may be important for healthy offspring as well.”

“The emphasis related to the birth of a healthy baby has been weighted towards the health and diet of women, not just during pregnancy, but before. What we’re finding now is that a nutritious diet, specifically folate intake, may be beneficial for men as well when it comes to producing healthy offspring,” Dr. Eskenazi said.

She also adds that if other studies confirm her team’s findings of the link between folate intake and aneuploidy, scientists may recommend men tale folic acid for at least three months before trying to conceive.

The idea that diet can improve sperm quality is less well established. “There is increasing evidence from a number of studies to suggest that dietary factors can correlate with sperm health. The story so far suggests that dietary factors won’t help you make more sperm, but good diet might just improve that quality of the ones that are made,” said Dr. Allan Pacey, senior lecturer in andrology at the University of Sheffield and honorary secretary of the British Fertility Society, BBC News reported.

The study findings are published in the March 20 issue of the journal Human Reproduction.

Researchers have found an association between a vitamin found in leafy green vegetables, fruit and pulses and levels of chromosomal abnormalities in men’s sperm. Men who consumed high levels of folate (a water-soluble B vitamin that occurs naturally in food) and folic acid (the synthetic form of the vitamin) tended to have lower levels of abnormal sperm where a chromosome had been lost or gained (known as aneuploidy).

Writing in Europe’s leading reproductive medicine journal, Human Reproduction, today (Thursday 20 March), the authors say estimates suggest that between 1-4% of sperm in a healthy man have some type of aneuploidy, but there are large variations among individuals, the mechanisms are poorly understood and little is known about the effects of men’s diet on their sperm.

In the first study of its kind to investigate the relationship between sperm aneuploidy and paternal diet, they analysed sperm samples from 89 healthy, non-smoking men and questioned them about their daily total intake (from diet and from vitamin supplements) of zinc, folate, vitamin C, vitamin E and beta-carotene.

One of the principal investigators of the study, Brenda Eskenazi, Professor of Maternal and Child Health and Epidemiology and Director of the Centre for Children’s Environmental Health at the School of Public Health, University of California, Berkeley, USA, said: ‘We found a statistically significant association between high folate intake and lower sperm aneuploidy: there was increasing benefit with increasing intake, and men in the upper 25th percentile who had the highest intake of folate between 722-1150 micrograms, had 20-30% lower frequencies of several types of aneuploidy compared with men with a lower intake.

‘However, this study cannot prove that high folate intake caused the lower sperm aneuploidy levels, only that there is an association. This is the first study of its kind and the results indicate the need for further research, especially a randomised controlled trial, on this topic.’

The researchers found no consistent associations between intakes of zinc and the other vitamins and sperm aneuploidy.

Prof. Eskenazi said: ‘While the importance of maternal diet on reproduction, especially folate intake, is well known, the results of our study suggest the importance of studying paternal nutrition when considering male-mediated developmental consequences. In previous studies, we and others have shown that paternal micronutrient intake may contribute to successful conceptions by improving the quality of the sperm. This study is the first to suggest that paternal diet may play a role after conception in the development of healthy offspring.’

The current recommended daily intake (RDA) for men aged over 19 is 400 micrograms, and the authors say that if other studies confirm their findings of the link between folate intake and aneuploidy, then a possible intervention would be to increase the RDA for men considering becoming fathers for at least three months before trying to conceive in order to reduce the risk of chromosomal abnormalities in their children.

Ms Suzanne Young, a researcher in Prof Eskenazi’s group and the study co-ordinator, said: ‘Increasing folate intake can be as simple as taking a vitamin supplement with at least 400 micrograms of folate or eating breakfast cereal fortified with 100% of the RDA for folic acid. In addition, green leafy vegetables, such as spinach, can have up to 100 micrograms of folate per serving.’

Disentangling the effects of folate from other micronutrients (e.g. the other vitamins) can be difficult, but the authors think they have succeeded in doing this by looking at several different nutrients in statistical analyses. Ms Young said: ‘The results of the different analyses were different, which gave us some confidence that we could look at the effect of these micronutrients separately. The definitive way to answer this question would be with a randomised control trial with folate supplementation.’

Source: European Society for Human Reproduction and Embryology

The first thing you should do before even beginning trying to conceive a baby is to talk to your doctor to see how you measure up health wise. Does he think you need to lose a few pounds before getting pregnant or does he feel you need to gain a few? Your doctor may recommend that you change your eating habits and start exercising. Continue Reading…

Vitamin B12 In The Body

Vitamin B12 (also referred to as Cobalamin) is vitally important in maintaining several processes of your body. It is an important water soluble vitamin, and accumulates in your kidneys, liver, and other body tissues, unlike other water soluble vitamins which are excreted quickly in the urine. As is the case, a deficiency of vitamin B12 may not even become noticeable until after several years of a diet lacking adequate amounts. B12 works with folic acid in the synthesis of DNA and red blood cells, it is vastly important in maintaining the myelin sheath (the insulation sheath that covers nerve cells). It also helps to convert carbohydrates, fats and proteins from food into energy. In keeping your red blood cells healthy, you are also helping to prevent heart disease. It has also been shown to keep your immune system healthy as well.
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Availability of adequate fluoride confers significant resistance to dental caries. It is now considered that the topical action of fluoride on enamel and plaque is more important than the systemic effect. Where the natural fluoride content of the drinking water is significantly less than 1 mg per litre, artificial fluoridation is the most economical method of supplementing fluoride intake. Continue Reading…

Folic acid is essential for the synthesis of DNA and certain proteins. Deficiency of folic acid or vitamin B₁₂ is associated with megaloblastic anaemia. Folic acid should not be used in undiagnosed megaloblastic anaemia unless vitamin B₁₂ is administered concurrently, otherwise neuropathy may be precipitated . Supplementation with folic acid 400 micrograms daily is recommended for women of child-bearing potential in order to reduce the risk of serious neural tube defects in their offspring .