What is Vitamin D – Part2

What Happens If Your Vitamin D is Too Low?
Symptoms of a vitamin D deficiency can often be difficult to evaluate because they can masquerade as many other issues.
As a result, the effects of a vitamin D deficiency can be insidious and debilitating. Here is a list of eight signs and symptoms of a vitamin D deficiency that are common but often missed.

1. Poor Bone Health
Bone loss (in adults) and poor bone formation (in children) can be symptoms of vitamin D deficiency.
Calcium supplementation is one of the first things people think of to help ensure strong bones, but the body needs adequate vitamin D to be able to use the calcium consumed through diet and supplements for it to be useful.
Rickets, a condition resulting in soft and malformed bones, is a symptom of vitamin D deficiency in children.
Research has shown a strong link between low bone mineral density and lower vitamin D levels in middle-aged and senior women, a group already at high risk of bone deterioration. (6)

2. Frequent Illness and Infection
Because vitamin D plays such a crucial role in healthy immune function, vitamin D deficiency can lead to frequent or recurrent illnesses and infection.
Seasonal illnesses like cold and the flu tend to come on during the winter, when we are exposed to less sunlight and our vitamin D levels are lower.
There is significant research to show a strong link between vitamin D deficiency and respiratory illnesses, especially influenza, and that maintaining optimal vitamin D levels reduces your risk of infection. (7, 8)

3. Chronic Pain
Joint and bone pain is a common symptom of vitamin D deficiency that often goes unrecognized or attributed to another cause.
Those with low amounts of vitamin D have been found to be twice as likely to experience generalized bone and joint pain, especially in women. When considering chronic back pain, vitamin D deficiency is a culprit there, too, with increased pain levels and greater interference in day-to-day activities. (9, 10)

4. Fatigue
Fatigue is such a general symptom that can be caused by so many things, it’s easy to miss as an effect of a vitamin D deficiency.
Studies have shown that there is a strong correlation between fatigue and very low levels of vitamin D, especially in women. This leads to difficulties in daily living and reduced quality of life. Symptoms were found to improve with vitamin D supplementation. (11, 12)

5. Mood Disorders
A depressed or anxious mood can both be symptoms of a vitamin D deficiency. We have many vitamin D receptors in the part of our brain that regulates mood. When we are deficient in vitamin D, it makes it difficult for our brain to regulate our mood, leaving us more susceptible to mood disorders.
Research has found that vitamin D supplementation improves mood in those who are deficient and experiencing depression. Likewise, low vitamin D levels have been found in those dealing with anxiety disorders, as well. (13, 14)

6. Slow Healing
If you find that wounds and injuries take longer than they should to heal, you may be deficient in vitamin D. Vitamin D is important for regulating our inflammatory response to injury. Higher levels of inflammation make it more difficult for tissues to heal properly. Lack of vitamin D can interfere with the formation of new health tissue in wounds, and it can even impair dental surgery outcomes for up to a year later! (15, 16, 17)

7. Hair Loss
Hair loss can be caused by many issues, but hair loss is a symptom of vitamin D deficiency.
Alopecia is an autoimmune disease that results in severe hair loss and is strongly associated with rickets. Vitamin D deficiency plays a role in both increased risk of autoimmune disease and is directly responsible for rickets. Research has found the lower one’s vitamin D levels, the worse alopecia hair loss is. (18, 19)

8. Neurological Issues
Chronic muscle weakness and nerve pain is at an all-time high and causes can be difficult to determine. One cause that is often overlooked is vitamin D deficiency.
Muscle pain can be a sign of vitamin D deficiency in adults and children. The nerves in the body that sense pain contain vitamin D receptor sites. When vitamin D is lacking, these nerves can begin to become hypersensitive to stimulation resulting in increased pain levels.
In vitamin D deficient children with growing pains, vitamin D supplementation improved pain scores by over 50%. In another observational study, over 70% of adults with chronic pain were found to be vitamin D deficient. (20, 21, 22, 23)

Can Lack of Vitamin D Cause Weight Gain?
This is a common question, and the evidence suggests vitamin D deficiency can cause weight gain.
Vitamin D deficiency is more common amongst overweight individuals and even modest amounts of weight loss improve vitamin D levels in the body.
Vitamin D supplementation, together with diet and exercise changes, has been found to accelerate weight loss in women over diet and exercise changes alone. Maintaining optimal vitamin D levels is linked to less weight gain over time. So if your healthy living weight loss efforts are having difficulty getting off the ground, or you seem to have stalled out, addressing a potential vitamin D deficiency could have positive results on your weight management. (24, 25)

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ビタミンDって何? - Part2


1. 骨の健康状態の悪化

2. 病気や感染症にかかりやすくなる
ビタミンDの欠乏と呼吸器系の病気、特にインフルエンザとの間には強い関連性があり、ビタミンDのレベルを最適に保つことで感染症のリスクが減ることを示す重要な研究結果があります。(7, 8)

3. 慢性的な痛み
特に女性について、ビタミンDが不足していると全身の骨や関節の痛みを感じる確率が2倍になることがわかっています。慢性腰痛についても、ビタミンD不足が原因で痛みが強くなり、日常生活に支障をきたすことがあります。(9, 10)

4. 疲労感
疲労感は、一般的な症状であり様々な原因が考えられるためビタミンD不足の影響として見逃されがちです。研究によると、特に女性の疲労には体内の低いレベルのビタミンDが関係があることが分かっています。倦怠感を放置してしておくと様々な日常生活に影響し始めますが、症状はビタミンDを補給することで改善することがわかっています。(11, 12)

5. 気分障害
憂鬱な気分や不安な気分は、どちらもビタミンD不足の症状です。気分をコントロールする脳の部分には、多くのビタミンD受容体が存在しています。ビタミンDが不足すると、脳内での気分のコントロールが難しくなり、気分障害になりやすくなります。 研究によると、ビタミンDが不足している人がうつ病になった場合、ビタミンDを補給することで気分が改善することがわかっています。同様に、不安障害のある方でも、ビタミンDの濃度が低いことがわかっています。(13, 14)

6. 傷の治りが遅い
ビタミンDは、怪我に対する炎症反応を調整するのに重要です。炎症のレベルが高いと、組織が適切に治癒するのが難しくなります。ビタミンDが不足すると、傷口の新しい健康な組織の形成が阻害され、さらには歯科手術の終了が1年後になってしまう可能性があります。(15, 16, 17)

7. 抜け毛
脱毛症は深刻な脱毛を引き起こす自己免疫疾患で、くる病との関連性が強いと言われています。ビタミンDの不足は、自己免疫疾患のリスク増加とくる病の直接的な原因の両方に関与しています。ビタミンDのレベルが低いほど、脱毛症の抜け毛がひどくなるという研究結果があります。(18, 19)

8. 神経系の問題
ビタミンDが不足している成長痛の子どもにビタミンDを補給すると、痛みの度合いが50%以上改善されました。別の観察研究では、慢性疼痛を持つ成人の70%以上がビタミンD欠乏症であることが判明しています。(20, 21, 22, 23)

ビタミンD欠乏症は太った人に多く見られ、わずかな体重減少でも体内のビタミンDレベルは改善されます。ビタミンDを補給しながら食事や運動を改善すると、食事や運動だけの場合よりも女性の体重減少が促進されることがわかっています。最適なビタミンDレベルを維持することは、長期的に見て体重増加を抑えることにつながります。減量活動がなかなか軌道に乗らなかったり、停滞しているように見える場合は、潜在的なビタミンDの不足に対処することで、体重管理に良い結果をもたらす可能性があります。(24, 25)

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What is Vitamin D – Part2

Coming soon!