Calcium: 12 foods that contain it the most

Having a beautiful, healthy and well-groomed smile greatly increases one's self-esteem, confidence in others and security in everyday life. 

Some people, however, experience a sense of discomfort and shame due to the yellowing of their teeth. Yellow teeth are not always the result of inadequate oral hygiene, but can be the consequence of many factors, from genetics to foods ingested to liquids drunk, among many other things.

Fortunately, modern medicine is well aware of the causes of yellowing teeth, as well as all the prevention and especially treatment strategies.

A phobia indicates an irrational and persistent fear and revulsion of certain situations, objects, activities, animals or people, which can sometimes be limiting and can have an impact on our everyday life.

Almost everyone has a more or less pronounced phobia, but while some are very rare and particular, others are widespread.

The 'World Mental Health Survey Initiative', a collaborative project of the WHO, Harvard University and the University of Michigan, has ranked the most widespread phobias.

When the intensity of blood directed to the brain decreases, a loss of consciousness and thus fainting may occur.

Fainting, mechanically, is manifested by a sudden loss of muscle tone, which causes a fall towards the ground, with loss of facial colouring. Before fainting, one may experience weakness, nausea and problems with vision and hearing. Usually the loss of consciousness lasts about two minutes.

The causes of fainting can be as varied as the symptoms preceding it. (Source: Humanitas Hospital Milan)

Bone cancer can originate from the transformation of any cell of which a bone is composed. In fact, bones are made up of living and active cells that help maintain their shape and strength.

The causes of bone cancer are still largely unknown, but it is currently possible to identify some risk factors (such as genetic risk factors) and to speculate on probable molecular causes.

Bone cancer can have some typical symptoms, which also vary according to its location and size. (source airc.co.uk)

Systemic lupus erythematosus is a connective tissue disease that is characterised by erythematous manifestations on the skin and mucous membranes, but also by sensitivity to sunlight and a whole range of other consequences.

The individuals most affected by this disease are women between the ages of 15 and 40 years, and although there may be cases of familial cases, it is far more common for lupus to be a sporadic disease.

The cause of its occurrence is currently unknown. The fact that it affects more women than men, however, could indicate an important role of hormonal factors. (Source: humanitas.it)

Aerophobia, synonymous with aviation phobia or simply fear of flying, is certainly one of the most widespread and common phobias in the world. 

The causes may stem from a particular trauma related to flying, but in most cases it has no precise origin other than unfamiliarity and lack of experience with the medium. Unfortunately, people with this phobia often forego important journeys, thinking of their family members, perhaps their colleagues, as well as themselves. Some manage to take their fear in their hands and fly anyway, others just can't do it.

There are, however, some techniques, and some things one can do before, during and after the flight to try to overcome this fear.

Reusable bottles have the virtue of helping us limit our use of plastic, but they must be thoroughly washed so that they do not accumulate germs and mould that could be a potential health hazard.

According to experts, the best thing to do would be to clean the bottles after each use as they tend to accumulate a lot of germs. Especially since all warm and humid places provide the ideal environment for mould to develop.

Some types of bottles can be washed in the dishwasher, but you can also wash them by hand. Let's find out how.

Health is one of the most important aspects of our lives, and often small changes can make a big difference in improving it.

You do not have to completely revolutionise your lifestyle to achieve positive results.

In this article, we will explore six small but significant changes you can make in your daily routine to improve your overall health and well-being.

Many people suffer quite often from vitamin B12 deficiency, a symptom that is very difficult to diagnose.

This is because vitamin B12 deficiency manifests itself with a wide range of symptoms, from dizziness to obsessive-compulsive disorders, which can also be caused by another problem or deficiency. Vitamin B12 deficiency can be caused for these reasons: 1. A non-consumption of foods rich in this vitamin, as is the case of vegetarians and vegans 2. The fact that the body can not absorb it effectively. In any case, regular monitoring of vitamin B12 levels is recommended. (especially in cases of alcoholism, gastric or intestinal disorders, aging or genetic diseases)

What are the possible symptoms of vitamin B12 deficiency to pay attention to? Browse the gallery to discover them.

Deciding to get a tattoo is an important choice because a tattoo is something that will remain on one's skin forever.

Tattooing is also a choice to be made safely, both in terms of equipment and hygienic conditions. But that is not all, because there are cases in which tattooing is not recommended or even avoided.

Often these are pathologies that advise against getting a tattoo, while at other times it may be inadvisable in certain parts of the body or when taking certain medications. (Source: epicentro.iss.it)

Prader-Willi syndrome is a rare genetic disorder and is considered one of the main causes of syndromic obesity.

Prader-Willi syndrome is a genetic abnormality involving certain genes located at the level of the long arm of chromosome 15 that is inherited from the father. It is however a random genetic error, which is not hereditary. It can be diagnosed with a genetic analysis by means of a simple blood test.

The symptoms of the disease can vary greatly from patient to patient, but there are generally two stages.

The use of smart working is becoming increasingly common and while this may be perfect for both workers and companies, for the former it often also means paying more attention to one's health.

Making greater use of smart working often means having a much more sedentary lifestyle, with all that this can entail for one's health, in terms of a greater propensity to develop certain ailments or diseases.

For this reason, doctors are increasingly willing to give advice on how to live smart working in a healthy way, with the aim of not adversely affecting health.

Non-polio Enteroviruses are widespread viruses that can cause infections mainly of the respiratory system.

Most people who come into contact with them show no or mild symptoms, but some categories, such as children and those with immune deficiencies, complications can be severe.

The symptoms can be varied and may vary depending on the health situation of the affected person. Let's find out this and other information on the subject in detail. (source: humanitas.it)