Wednesday, January 1, 2014

Best vitamins for your skin

The best defense against premature ageing, wrinkles, fine lines and discoloration is vitamins supply that helps to protect your skin from of sun exposure, pollution and other harmful effects.


 Many skin care products are filled with healthy antioxidants and other nutrients to keep your skin look younger, but they are not enough as our skin needs variety of vitamins from the inside.
What are the most powerful vitamins for a younger, healthy skin? 

Vitamin C

 Vitamin C plays a vital role in production of collagen, the basic protein in connective tissue. And it is known that decrease in collagen supply may lead to skin ageing, dry and rough skin. The best sources of vitamin C are fruits and berries, such as pineapples, oranges, strawberries, blueberries, as well as vegetables such as peppers, cabbage and others.

                                                                           Vitamin E

 Vitamin E is another antioxidant that reduces the damage caused by free radicals They increase natural defense of your skin and prevent the damage. Vitamin E is found in nuts, sunflower oil, wholegrain products, eggs and many natural oils.

Vitamin A

 Vitamin A helps to repair your skin from damage caused by various factors, preventing the effect of free radicals, and keeping your skin moisturized. Keep in mind that vitamin A is fat-soluble and you should be careful not to overdose it since it can have toxic effect. The best way to avoid vitamin A toxicity is by consuming variety of healthy foods, such as carrots, pumpkin, green leafy vegetables, apricots, cantaloupe, liver and eggs.

B vitamins

 The B vitamins are essential for cell functions, preventing premature ageing of the skin, dry and itchy skin. It is important to ensure the appropriate supply of B vitamins, eating a well-balanced diet that includes eggs, fortified grains, milk, chicken,

Zinc
Zinc is an important antioxidant that effectively protects your skin from free radicals damage. The lack of zinc may result in various skin problems, such as acne, psoriasis, atopic dermatitis and others. To ensure the right zinc intake for healthy skin, eat whole grains, red meat, seeds, oysters, some beans and peas.

Selenium
Selenium benefits your skin and hair, contributing to cell growth and preventing skin cancer. This antioxidant can be found in Brazil nuts, turkey, cod, wheat flour, rice, chicken and tuna.

Omega-3 fatty acids

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Tuesday, December 31, 2013

10 Things You Didn't Know About You

The human body is a great, sweaty, fluid-filled machine, moving and mixing chemicals with precision and coordination, making everything from memories to mucus. Here we explore some of the complex, beautiful or just plain gross mysteries of how you function.

10. Your Stomach Secretes Corrosive Acid

 There's one dangerous liquid no airport security can confiscate from you: It's in your gut. Your stomach cells secrete hydrochloric acid, a corrosive compound used to treat metals in the industrial world. It can pickle steel, but mucous lining the stomach wall keeps this poisonous liquid safely in the digestive system, breaking down lunch.
                                       09. Body Position Affects Your Memory


Can't remember your anniversary, hubby? Try getting down on one knee. Memories are highly embodied in our senses. A scent or sound may evoke a distant episode from one's childhood. The connections can be obvious (a bicycle bell makes you remember your old paper route) or inscrutable. A recent study helps decipher some of this embodiment. An article in the January 2007 issue of Cognition reports that episodes from your past are remembered faster and better while in a body position similar to the pose struck during the event.

08. Bones Break (Down) to Balance Minerals

 In addition to supporting the bag of organs and muscles that is our body, bones help regulate our calcium levels. Bones contain both phosphorus and calcium, the latter of which is needed by muscles and nerves. If the element is in short supply, certain hormones will cause bones to break downeupping calcium levels in the bodyeuntil the appropriate extracellular concentration is reached.

07. Much of a Meal is Food For Thought


 Though it makes up only 2 percent of our total body weight, the brain demands 20 percent of the body's oxygen and calories. To keep our noggin well-stocked with resources, three major cerebral arteries are constantly pumping in oxygen. A blockage or break in one of them starves brain cells of the energy they require to function, impairing the functions controlled by that region. This is a stroke.

06. Thousands of Eggs Unused by Ovaries


 When a woman reaches her late 40s or early 50s, the monthly menstrual cycle that controls her hormone levels and readies ova for insemination ceases. Her ovaries have been producing less and less estrogen, inciting physical and emotional changes across her body. Her underdeveloped egg follicles begin to fail to release ova as regularly as before. The average adolescent girl has 34,000 underdeveloped egg follicles, although only 350 or so mature during her life (at the rate of about one per month). The unused egg follicles then deteriorate. With no potential pregnancy on the horizon, the brain can stop managing the release of ova.

05. Puberty Reshapes Brain Structure, Makes for Missed Curfews


 We know that hormone-fueled changes in the body are necessary to encourage growth and ready the body for reproduction. But why is adolescence so emotionally unpleasant? Hormones like testosterone actually influence the development of neurons in the brain, and the changes made to brain structure have many behavioral consequences. Expect emotional awkwardness, apathy and poor decision-making skills as regions in the frontal cortex mature.

04. Cell Hairs Move Mucus


Most cells in our bodies sport hair-like organelles called cilia that help out with a variety of functions, from digestion to hearing. In the nose, cilia help to drain mucus from the nasal cavity down to the throat. Cold weather slows down the draining process, causing a mucus backup that can leave you with snotty sleeves. Swollen nasal membranes or condensation can also cause a stuffed schnozzle.

03. Big Brains Cause Cramped Mouths


 Evolution isn't perfect. If it were, we might have wings instead of wisdom teeth. Sometimes useless features stick around in a species simply because they're not doing much harm. But wisdom teeth weren't always a cash crop for oral surgeons. Long ago, they served as a useful third set of meat-mashing molars. But as our brains grew our jawbone structure changed, leaving us with expensively overcrowded mouths.

02. The World Laughs with You


Just as watching someone yawn can induce the behavior in yourself, recent evidence suggests that laughter is a social cue for mimicry. Hearing a laugh actually stimulates the brain region associated with facial movements. Mimicry plays an important role in social interaction. Cues like sneezing, laughing, crying and yawning may be ways of creating strong social bonds within a group.
                                                                
                                             01. Your Skin Has Four Colors

All skin, without coloring, would appear creamy white. Near-surface blood vessels add a blush of red. A yellow pigment also tints the canvas. Lastly, sepia-toned melanin, created in response to ultraviolet rays, appears black in large amounts. These four hues mix in different proportions to create the skin colors of all the peoples of Earth.

The Seville's Solar Power Tower — Spain

The PS10 Solar Power Plant is the world's first commercial concentrating solar power tower operating near Seville, in Andalusia, Spain. The 11 megawatt (MW) solar power tower produces electricity with 624 large movable mirrors called heliostats. It took four years to build and so far cost €35 million (US$46 million). PS10 produces about 23,400 megawatt-hours (MW·h) per year, for which it receives €271 (US$360) per MW·h under its power purchase agreement, equating to a revenue of €6.3 million per year.


 The mirrors were delivered by Abengoa, the solar receiver was designed and built by Tecnical-Tecnicas Reunidas, a Spanish engineering company; and the Solar Tower was designed and built by ALTAC, another Spanish engineering and construction company. Each of the mirrors has a surface measuring 120 m² (1,292 square feet) that concentrates the sun's rays to the top of a 115 meter (377 ft) high, 40-story tower where a solar receiver and a steam turbine are located. The turbine drives a generator, producing electricity. The PS10 is located 20 km west of Seville (which receives at least nine hours of sunshine 320 days per year, with 15 hours per day in mid summer). The solar receiver at the top of the tower produces saturated steam at 275 °C. The energy conversion efficiency is approximately 17%.












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