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The estimated daily requirement needed to maintain body stores of B12 varies, an estimate being from 2µg to 5µg, more if stores have been depleted in any way. It is estimated that the average person stores about 1 mg (1000 µg) of B12 in their liver, and other smaller amounts elsewhere. The recommended daily allowance assumes a 50% absorption rate of ingested ...


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Let me address this point mentioned in the question: "My apothecary person told me 500-1000 µg per day are needed to even start absorbing meaningful quantities by ingestion." This addresses a problem with the way we absorb vitamin B12. As explained here, when vitamin B12 is ingested, certain so-called transport proteins are needed to move it to the ...


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In short, to improve your ability to remember what you did yesterday or today just start by making a conscious effort to recall it on a daily basis. A simple example would to take some notes about what you did that day each day. e.g. after work keep a log of what happened during they day, lunch meetings, etc, what you did, who said what. People who seem ...


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I haven't found any source that would claim that a normal level of haptocorrin in saliva is a limiting factor for the absorption of vitamin B12 from supplements. On the other hand, haptocorrin deficiency can limit the absorption of vitamin B12 even from food thus leading to vitamin B12 deficiency (Clinical Chemistry, 2003). It is the intrinsic factor that ...


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I consider a guide about dietary supplements reasonably reliable if it is based on recent systematic reviews of studies that agree with each other and does not push supplements to healthy people. The following sources can be beneficial for you if you know what do you want to know: Do potassium supplements lower blood pressure, do calcium supplements cause ...


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The ingredients one by one Sorbitol: An alcohol sugar, and a sugar substitute. However, xylitol has become more widely used because a few type of bacteria (Streptococcus mutans) can process sorbitol and as such it is more anticariogenic. In addition, sorbitol has one-third fewer calories and 60 % the sweetening activity of sucrose and is used as a sugar ...


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In addition to Narusan's comment on exercise, it's important to consider diet too. Sometimes a lack of concentration and mental alertness can result from lower-than-usual energy levels, which can in turn be caused by poor dietary choices. NHS Choices stresses that eating well (as in a healthy, balanced diet) is preferable to taking supplements when trying ...


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EDIT: Its thoracic outlet syndrome. If I do certain stretches it goes away Old: So I looked into it, and I found those ingredients are actually good for "carpel tunnel" which has been found to be related to raynauds in some cases... this is essentially a pinched nerve due to bad posture (common in computer scientists). I don't think I have this in my hands,...


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Your experience that alcohol warms your fingers and the fact that the drug nifedipine is used in Raynaud's symptoms relief suggest that the mechanism involved in warming fingers is vasodilation. From the list of ingredients in your product, L-theanine can cause arterial vasodilation and could therefore be theoretically responsible for symptoms relief. ...


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Outdoor physical aerobic exercise did it for me. Walking and especially running. In just a few weeks I had a completely different brain (so it seemed). Get some advice from a sports physician first, it'll save your body and make the experience much more fun.


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Vitamin B12 is involved in the synthesis of melatonin, a hormone that is produced by the pineal gland in mammals and helps to regulate the circadian rhythm and therefore sleep. Thus a B12 deficiency could result in sleep disturbance. Source: Peuhkuri, Katri, Nora Sihvola, and Riitta Korpela. "Dietary factors and fluctuating levels of melatonin." Food &...


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