Muscle Weakness Muscle weakness is usually caused by a Vitamin D deficiency. Muscles have Vitamin D receptors. They must have a constant supply of Vitamin D to function. If your body has a deficiency of Vitamin D, your muscles will have trouble functioning. Bone Pain Bone Pain Shunning the sun and being lactose intolerant can leave you with a deficiency of Vitamin D. This can lead to bone pain, which can be difficult to distinguish from muscle or joint pain, but generally manifests as a deep, full pain that can't be isolated to an exact area. Constant Respiratory Problems Getty Images Constant Respiratory Problems Studies show that Vitamin D may help defend against respiratory illness. This is especially true in children. If your child has severe asthma, you may want to increase their Vitamin D intake. Sweaty Head Sweaty Head Years ago, doctors used to ask new mothers if their newborns' heads were sweating more than normal. This is apparently a very early sign that a baby is Vitamin D deficient. If you're breastfeeding, you'll need to increase your sun exposure or consume more foods rich in Vitamin D. Depression Getty Images Depression According to the Vitamin D Council, this essential nutrient helps your brain's neurotransmitters produce the fluid serotonin. This produces our feelings of happiness. Studies have linked low levels of Vitamin D with episodes of depression. This happens especially during the winter months, because of the lack of sun during that time of year. Chronic Infections Getty Images Chronic Infections The Mayo Clinic has advised that Vitamin D is crucial to our body's health. It is a necessary vitamin in helping our body fight infections. If you notice you or your child is prone to getting infections, you might want to ask your doctor to give you a Vitamin D blood test. Cardiovascular Disease Getty Images Cardiovascular Disease Articles published by the National Institutes of Health have shown that deficiencies in Vitamin D can lead to congestive heart failure. Make sure your body maintains the proper amounts to guard against the risk. Home tests are available to check if you have a lack of Vitamin D. Psoriasis Getty Images Psoriasis Although psoriasis is not always caused by a lack of Vitamin D, it's used in treatment. The Mayo Clinic claims that if you have a lack of Vitamin D it will be harder for your body to defend itself against psoriasis. Chronic Pain Chronic Pain Studies have shown that low Vitamin D levels impact a person's chances of having chronic pain. People with darker skin are more prone to these effects, because they need more sun exposure to actually absorb any Vitamin D. Tiredness Getty Images Tiredness Vitamin D is one of the necessary vitamins for your body to create energy. Without it you can end up feeling tired most of the day. This will make it hard for you to get around or even get to work. You should consult your doctor if you have constant feelings of tiredness. Hypertension Getty Images Hypertension Harvard University conducted a study on women. The study showed that women with low levels of Vitamin D have a 67 percent increased risk of hypertension. If you suffer from anxiety, you may want to consider purchasing Vitamin D supplements and adding them to your daily routine. Crankiness Crankiness Vitamin D also affects the levels of serotonin in your brain, which is what impacts your mood. If you're feeling cranky, it might be because you're not producing enough serotonin!

• published: 02 Sep 2015
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