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  1. 2023年1月14日 · But if untreated, it may lead to symptoms such as: Weakness, tiredness, or lightheadedness. Heart palpitations and shortness of breath. Pale skin. A smooth tongue. Constipation, diarrhea, loss of ...

  2. Overview. Vitamin B12 is an essential vitamin found in foods such as meat, fish, and dairy. It can also be made in a lab and is often taken with other B vitamins. Vitamin B12 is required for the ...

  3. 2022年9月21日 · Amounts and Dosage. The recommended daily intake of vitamin B-12 for adults is 2.4 micrograms. Vitamin B12 is also found in animal products, such as eggs, meat, fish, poultry, milk, and some ...

  4. 2023年4月7日 · Milk. Haddock. Salmon. If you are an older adult, you should be taking a supplement for B12 as well as trying to incorporate B12 into your diet. It is vital for good health and cognitive ...

  5. 2024年2月13日 · That can put a real strain on your eyes. Eye problems caused by computer use fall under the heading computer vision syndrome (CVS). It isn’t one specific problem. Instead, it includes a whole ...

  6. 2023年3月15日 · Vitamin B-12: Recommended Dietary Allowance (RDA) in micrograms (mcg) For children under age 1, only an adequate intake (AI) is available 0-6 months 0.4 micrograms/day Adequate Intake (AI) 7-12 months

  7. 2023年1月13日 · B12 may lower homocysteine levels which could contribute to a lower odds of heart disease, but only in people who have a diagnosed B12 deficiency, Swenor says. Infertility. B12 has been shown to ...

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