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Human lungs – Parts of respiratory system

Humans for respiration need a continuous supply of oxygen. Humans take in oxygen and leave out carbon dioxide, which is the poisonous waste product in the process of respiration. The lungs are essential respiratory organs in the human body.

Are you Vitamin D deficient?

Basically, humans need Vitamin D. It promotes bone health (a major issue for the elderly and children) and could be a factor in keeping cardiovascular disease and some cancers at bay. Sunlight is where we get most of our Vitamin D. For those living above the 42 north line though, from November through February there is not enough UVB sunlight to make vitamin D in the skin. Therefore there needs to be another way to get your daily dose of Vitamin D! You can get it from food (cod liver oil, margarine, egg yolk, fish and beef liver), or vitamin supplements. So next time you feel like you’ve been inside for far too long, eat some of these things or go out and have some fun in the sun!