Unfortunately, there are many people, especially teenagers, who think smoking is cool. Young people want to be adults and a casually smoked cigarette makes them look older. Also, many start smoking out of peer pressure. They spend time with friends who smoke and don't want to be an outsider. After a few years, they get so used to their habit that they can't or don't want to stop smoking. Smoking has many negative aspects, especially in terms of health and appearance.

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If you occasionally wake up with a numb, numb hand, it is usually because you have been lying on your arm or hand and the blood has been cut off. However, if it occurs regularly, it may be a disease that causes hand numbness.

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How long it takes for food poisoning to develop after ingestion depends on the type of poisoning. In general, the first symptoms may appear two to six hours after the spoilt food has been ingested. Occasionally, poisoning can occur after only a few minutes or only after a few days. Pathological food poisoning can last up to ten days. Some types can also be fatal.

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To effectively protect your eyes from the sun's UV rays, you don't need particularly dark sunglasses or sunglasses with special UV filters.

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Whether people with a light eye colour are actually more sensitive to light has not been fully proven. The darker the eye colour, the more pigments there are in the iris, which provide a more effective shadow the smaller the pupil becomes due to the incidence of light. On the other hand, light sensitivity is also controlled by the retina.

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If you hold a carafe made of lead crystal up to the light, you can recognise that you have a valuable piece of glassware due to the refraction of the heavy crystal. However, lead crystal should only be used as decoration and not for food use.

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Quartz crystals can be used to energise ordinary water, making it healthier. Quartz stones have many uses, e.g. in watches or jewellery. They can also be used to enrich drinking water with negatively charged ions, making it healthier to drink. Various quartz crystals can be used for this purpose, especially rose quartz, amethyst (violet quartz) and citrine (yellow quartz).

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Simple home remedies can help if you have lost your voice, provided there is no serious cause for the hoarseness. Even if severe hoarseness and complete loss of voice usually only last a few days, it is not only unpleasant, but can also have more serious consequences if you need your voice for work.

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Trembling of the hands or fingers can have several causes; it can be a mild nervous complaint or a serious illness.

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Methamphetamine (crystal meth) is very bad for the teeth and causes tooth decay very quickly. The white, odourless powder can be taken orally, snorted, smoked or injected. It stimulates the central nervous system while increasing the release of the neurotransmitter dopamine. Methamphetamine can be addictive and is not only bad for the teeth, but also for body tissues, blood vessels, motor functions and psychological reactions.

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