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Zinc is a trace mineral that is found in around 100 enzymes, and after iron, is the second most common transition metal in the body. This means that it plays an important role in healthy metabolism and in making new cells.
Zinc is distributed throughout the brain, kidneys, muscles and eyes, and in men, the prostate gland. It is directly involved in cell division, helping to make new cells, and keep enzymes working at their optimum.
It is thought to play a role in brain function, helping to keep the brain alert and responsive to learning. It is thought to prevent heavy metals from accumulating in the brain, helping to prevent degeneration of cells, and reducing risk of conditions such as Alzheimer’s.
Zinc plays an important role in male prostate health. This is because the prostate cells require zinc to work at their optimum, needing approximately ten times more zinc than other cells in the body. It is vital for the correct balance of the male hormone testosterone.
A large quantity of zinc is stored in the eyes. It works together with vitamin A to ensure the health of the retina, helping the eyes to sense light, and reducing risk of certain age-related eye conditions, such as macular degeneration.
A healthy balanced diet should provide you with all the zinc you require. The average adult man requires 5.5-9.5mg daily, while adult women need 4-7mg each day, though it is thought that up to 25mg can be taken without side-effects. Foods high in zinc include dairy foods, meat and shellfish.
Food source | Zinc content (milligrams, mg) |
Oyster, 100g | 78.6 |
Wheat Germ, 100g | 16.7 |
Beef, 100g | 12.3 |
Pumpkin seeds, 100g | 10.3 |
Cashew nuts, 100g | 5.6 |
Mussels, 100g | 2.6 |
Ricotta cheese, 125ml | 1.8 |
Eggs, 2 | 1.3 |
The majority of zinc is stored inside cells, which means that blood tests to measure levels of zinc are notoriously inaccurate. Initially zinc deficiency presents few symptoms, though it can result in reduced growth, skin and eye lesions and reduced immune function.
Though mild zinc deficiency is a widespread occurrence, severe deficiency is rare and generally only occurs in those who have a genetic condition which prevents zinc from being effectively absorbed. Deficiency is treated through increasing the intake of zinc in the diet, or through supplementation under supervision of a medical professional.
Consuming too much zinc is more likely to occur by taking high doses of zinc supplements than it is through diet. Initially, too much zinc may cause stomach pain, nausea and loss of appetite.
However, taking excessive amounts of zinc supplements over a longer period of time can result in dizziness, shortness of breath and chest pain. As high doses of zinc reduce the body’s ability to absorb copper, taking too much zinc can lead to copper deficiency and weakening of the bones.
A healthy balanced diet should provide you with all the zinc you require. The average adult man requires 5.5-9.5mg daily, while adult women need 4-7mg each day, though it is thought that up to 25mg can be taken without side-effects. Foods high in zinc include dairy foods, meat and shellfish.
Food source | Zinc content (milligrams, mg) |
Oyster, 100g | 78.6 |
Wheat Germ, 100g | 16.7 |
Beef, 100g | 12.3 |
Pumpkin seeds, 100g | 10.3 |
Cashew nuts, 100g | 5.6 |
Mussels, 100g | 2.6 |
Ricotta cheese, 125ml | 1.8 |
Eggs, 2 | 1.3 |
The majority of zinc is stored inside cells, which means that blood tests to measure levels of zinc are notoriously inaccurate. Initially zinc deficiency presents few symptoms, though it can result in reduced growth, skin and eye lesions and reduced immune function.
Though mild zinc deficiency is a widespread occurrence, severe deficiency is rare and generally only occurs in those who have a genetic condition which prevents zinc from being effectively absorbed. Deficiency is treated through increasing the intake of zinc in the diet, or through supplementation under supervision of a medical professional.
Consuming too much zinc is more likely to occur by taking high doses of zinc supplements than it is through diet. Initially, too much zinc may cause stomach pain, nausea and loss of appetite.
However, taking excessive amounts of zinc supplements over a longer period of time can result in dizziness, shortness of breath and chest pain. As high doses of zinc reduce the body’s ability to absorb copper, taking too much zinc can lead to copper deficiency and weakening of the bones.
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Nida — 21.09.2020 03:04
this site is good and thanks for sharing this information for us
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Paul — 06.04.2017 17:37
What kind of food can i have too make me heathy
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Emma — 07.04.2017 09:04
Hi Paul, the key to health eating is eating fresh – cook from scratch and avoid using processed items as much as possible. Eat complex carbohydrates and wholegrains such as brown varieties of pasta and rice but also different wholegrains and pulses such as quinoa, lentils and beans, plus, plenty of fruit and vegetable, lean cuts of meat (red meat preferably no more than once per week), oily fish (aim for 1-2 portions per week) and sources of healthy fats including avocados, olive oil, coconut oil, nuts and seeds. I would also recommend you drink plenty of water, at least 1.5l of plain still water and avoid caffeine, alcohol and refined sugar as much as possible too.
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