Posts Tagged ‘sunlight’
Vitamin D: What foods, how much sun, which recommended intake?
Vitamin D is mainly produced in the skin in response to exposure to sunlight. Extend the midday sun in a swimsuit during a period of 20 minutes can produce between 8,000 and 10,000 IU (200 mcg to 250 mcg) (1). From October to April the sun’s rays are not strong enough to allow sufficient production.
Vitamin D - Sunlight
In the diet is found primarily in animal fats such as in butter, milk, whole milk products and eggs as well as in fish (especially oily fish) and liver. It is also added to some margarines and oils.
Many experts believe that these foods may, however, difficult to meet daily requirements for vitamin D.
- Two cups of milk (500 ml) provides 200 IU (5 micrograms)
- A portion of oily fish provides 200 to 400 IU (5 mcg to 10 mcg) <
- An egg provides 80 IU (2 mg)
- One serving provides 40 IU of liver (1 g).
How much vitamin D per day is recommended to take it?
While Canada’s Food Guide recommends 400 IU (10 mcg) of vitamin D3, various sexperts and organizations like the Canadian Cancer Society instead recommend 1000 IU (25 mcg) per day. As this contribution is almost impossible to obtain through diet, they recommend taking supplements of vitamin D (specifically Vitamin D3).
The Institute of Medicine’s Food and Nutrition Board U.S., the upper tolerable intake of vitamin D3 for adults is 2,000 IU (25 mcg). But some experts believe that this upper limit would be more than 10,000 IU (25 mcg) and the daily dose should be 2000 IU (50 mcg). Symptoms of vitamin D intoxication include weakness, nausea, decreased appetite and weight loss.
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Confidence Shown With Glasses
This one tool can not only help the eyesight, but also could be one force in the world of fashion trends. Choosing the right sunglasses will provide comfort as well as a plus on your appearance.
Not necessarily the glasses that look good and healthy on others will look the same when you’re wearing. For that, consider the following things:
Material type spectacle frames
Frames are made of titanium aluminum and generally more durable, while the plastic is relatively light but are not flexible, so not too easy to be adjusted with great faces.
Material type lenses
There are two types of material for the lens, namely glass and plastic. Glass lenses are scratch-resistant but relatively heavy and must be careful to use it in order not to rupture. Meanwhile, countless lightweight plastic material so as not to burden the nasal bone and need not be afraid to break. Unfortunately, plastic materials is relatively easy to get scratches which if left can disturb your vision.
There are other options for your lenses such as adding a protective layer (antireflective) to minimize the light coming in, diluting the lens (this is very useful for the minus thick) that is lighter and looks better, progressive lenses, or photochromic (transition lenses) that its color will change automatically become darker when exposed to sunlight.
You can customize the type of material these glasses frames and lenses with daily activities, such as photochromic lenses are suitable for people who spend more time outdoors. Of course, this creation will add a burden on your budget. Read the rest of this entry »