Gourt > Health > Conditions and Diseases > Nutrition and Metabolism Disorders > Vitamins and Minerals > Deficiency, Dependency and Toxicity
In mathematics, a deficient number or defective number is a number n for which σ(n) < 2n. Here σ(n) is the divisor function: the sum of all positive divisors of n, including n itself. An equivalent definition is that the sum of all proper divisors of the number (divisors other than the number itself) is less than the number. The value 2n − σ(n) is called the deficiency of n.
The first few deficient numbers are:
As an example, consider the number 21. Its divisors are 1, 3, 7 and 21, whose sum is 32. Because 32 is less than 2 × 21, the number 21 is deficient. Its deficiency is 2 × 21 − 32 = 10.An infinite number of both even and odd deficient numbers exist. For example, all prime numbers, all prime powers and all proper divisors of deficient or perfect numbers are deficient.
More on [ Deficient number ]
Vitamin B12: Vitamin Deficiency, Dependency, and Toxicity: Merck ...: Cobalamin is a general term for compounds ... http://t.co/B2mqFS3
honeysupp (diet) Fri, 09 Sep 2011 04:42:34 -0000
Vitamin B12: Vitamin Deficiency, Dependency, and Toxicity: Merck ...: Cobalamin is a general term for compounds ... http://t.co/B2mqFS3
Vitamin B12: Vitamin Deficiency, Dependency, and Toxicity: Merck ...: Cobalamin is a general term for compounds ... http://t.co/BVVabbk
conanvette (Bryan Moore) Thu, 08 Sep 2011 06:16:20 -0000
Vitamin B12: Vitamin Deficiency, Dependency, and Toxicity: Merck ...: Cobalamin is a general term for compounds ... http://t.co/BVVabbk
Vitamin B6: Vitamin Deficiency, Dependency, and Toxicity: Merck ...: Symptoms, signs, diagnosis and treatm... http://t.co/AIO9BDk
honeysupp (diet) Thu, 08 Sep 2011 03:58:16 -0000
Vitamin B6: Vitamin Deficiency, Dependency, and Toxicity: Merck ...: Symptoms, signs, diagnosis and treatm... http://t.co/AIO9BDk
Biotin Deficiency and Dependency - A brief look each at the deficiency and the dependency of this vitamin.
Calcium Metabolism - A look at this by Merck Manual with a list of disorders from calcium metabolism including signs, symptoms, diagnosis and treatment.
Chromium - A look at this essential trace mineral and its deficiency and toxicity.
Chromium Info - Dedicated to providing the latest research and information on the essential trace mineral chromium, chromium picolinate and the role they play in health and well-being.
Meta Description: [ Chromium Information: The latest chromium information and chromium research...Chromium is a trace mineral essential to a healthy diet... ]
Copper - An extensive look at deficiency and toxicity of this mineral including symptoms, diagnosis and a look at Wilson's Disease.
Fluorine - Fluoride is the ionic form of fluorine. A discussion about this mineral and its deficiency and toxicity.
Iodine - A look at this mineral, why it is needed, how much is needed and where it is found. Symptoms and results of deficiency and toxicity are discussed.
Iron Deficiency and Toxicity - The Merck Manual takes a look deficiency and the symptoms of toxicity.
Magnesium Update Information - An article about this metallic element which is essential for normal body functioning. A list of diseases that can result from inadequate intake and things that cause losses in our body.
Magnesium Metabolism - A look at disorders of magnesium metabolism by Merck Manual including the signs, symptoms, diagnosis and treatment.
Magnesium: Coming of Age - A look at this mineral and who looses it. A look at replacement strategies.
Manganese - A look at the intake of this mineral and how it compares with each person. A case study about its deficiency.
Molybdenum - A discussion about the deficiency and toxicity of this mineral.
Niacin Deficiency - A look at primary and secondary deficiency, symptoms, signs, diagnosis and treatment by The Merck Manual.
Norman Clinical Laboratory,Inc. - Links to vitamin B12 deficiency information. A kit can be ordered and testing done through the mail to check for this deficiency.
Pantothenic Acid Deficiency - Some of the signs and symptoms experienced with this deficiency.
Potassium Metabolism - The Merck Manual: A discussion on potassium and internal and external potassium balance, disorder of potassium metabolism, signs, symptoms, diagnosis, prophylaxis and treatment.
Potassium: Hyperkalemia - Find information on this disorder of high potassium, its causes, incidence and risk factors.
Reference Guide for Vitamins - The importance and deficiency symptoms of a specific list of vitamins.
Meta Description: [ Reference Guide For Vitamins. Includes definitions and other information for vitamins, minerals, amino acids, herbs and other important nutrients. Great for research. ]
Riboflavin Deficiency - The Merck Manual looks at the symptoms, signs, laboratory findings, diagnosis and treatment.
Selenium - A look at the intake in different parts of the world and its deficiencies and toxicity by the Merck Manual.
The Absolute Need for Magnesium - By Dr Herbert C. Mansmann Jr., MD. Information on headaches including using magnesium for treatment.
Meta Description: [ This site was made for all
of you headache sufferers. Messageboard with an MD and
RN. Chatroom discussions. ]
The Importance of Magnesium to Human Nutrition - Michael Schachter-HealthWorld Online A look at this important mineral, the symptoms of deficiency, diagnosis of deficiency, treatment orally and injectable and supplementing for various disorders.
Meta Description: [ HealthWorld Online is the Internet's leading resource on alternative medicine, wellness, and mind/body health, featuring the Wellness Inventory whole person assessment program, the Healthy Shopping Network, Find a Practitioner Network, Healthy Update e-newsletter, and thousands of expert articles... ]
Thiamine Deficiency and Dependency - The Merck Manual looks at primary and secondary deficiency, symptoms, signs, some specific diseases caused by deficiency, diagnosis and treatment.
Vitamin A Deficiency - A look at this vitamin and primary and secondary deficiency. The symptoms, signs, diagnoses and treatment are discussed.
Vitamin B6 Toxicity - A brief discussion of this and its symptoms by The Merck Manual.
Vitamin E Toxicity - A brief discussion by The Merck Manual on this topic.
Vitamin K Deficiency - A look at this vitamin, its daily intake amount, signs, symptoms, diagnosis, laboratory findings, prophylaxis and treatment.
Vitamin A Toxicity - Symptoms, signs, diagnosis and treatment are discussed by The Merck Manual.
Vitamin B6 Deficiency and Dependency - Symptoms, signs, diagnosis and treatment are discussed here.
Vitamin C Deficiency - A discussion about this vitamin and why we need it. Symptoms, laboratory finding, diagnoses, prophylaxis and treatment are covered.
Vitamin D Deficiency and Dependency - The signs, symptoms, laboratory findings, diagnosis and treatment.
Vitamin D Toxicity - Discussion on this vitamin and its first symptoms of toxicity and the treatment.
Vitamin E Deficiency - A discussion about this vitamin and the organs which can be affected by deficiency, signs and symptoms, laboratory findings, diagnosis and treatment.
Vitamin K Toxicity - A brief look at this by The Merck Manual.
WebMD: Vitamin B12 Deficiency Anemia - A discussion about this vitamin, its deficiency, symptoms, causes and a list of food sources.
Zinc - The Merck Manual takes a look at this mineral and signs and symptoms of deficiency and toxicity.
