Elevated Homocysteine Levels: The Causes and Symptoms

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Elevated Homocysteine LevelsWhat is homocysteine? Homocysteine is a metabolic byproduct of an amino acid called methionine. It probably doesn’t sound serious, but elevated homocysteine levels can have quite an effect on your health. It’s associated with an increased risk of various chronic diseases like high blood pressure, diabetes, and rheumatoid arthritis. When patients are diagnosed with elevated levels of homocysteine, and it’s found to be the cause or irritant of these conditions, they can often be treated by simply consuming the right foods and taking supplements.

How Are Elevated Homocysteine Levels Determined?

Homocysteine levels are commonly checked through blood tests, though doctors may also order urine samples for infants with a family history of the condition.

Normal levels of homocysteine are between five and nine micromoles per liter (μmol/L). Individuals are diagnosed with elevated homocysteine, or hyperhomocysteinemia, when their levels reach between 10 and 100 μmol/L. Borderline hyperhomocysteinemia is between 10 and 12 μmol/L, moderate is 13 to 30 μmol/L, intermediate is 31 to 100 μmol/L, and severe hyperhomocysteinemia is diagnosed when someone has more than 100 μmol/L. Usually, individuals that have elevated homocysteine levels don’t show any symptoms.

High concentrations of homocysteine have a connection with an increased risk of heart attack and stroke. These increased levels can contribute to plaque formation by damaging arterial walls and affect blood platelets by increasing the risk of clot formation.

While high homocysteine has negative effects on your heart, more research is required to confirm if it can actually cause cardiovascular disease. However, there is evidence to support the claim that individuals with elevated levels of homocysteine have double the risk of developing Alzheimer’s disease at some point in their lifetime.

What Causes Elevated Homocysteine Levels?

Increased levels of homocysteine can have a negative impact on your health, but what causes elevated homocysteine levels? Most commonly, an inadequate intake of B vitamins in combination with genetic factors can affect the body’s absorption and use of folic acid, which causes homocysteine levels to spike.

Some other causes of elevated homocysteine levels include both stress and coffee consumption. So, the more coffee you consume daily, the higher your risk will be of having a high level of homocysteine. Certain medications, low levels of the thyroid hormone, kidney disease, and psoriasis are also contributing factors to increased levels of homocysteine.

In addition to not eating foods with the right nutrients, the chances for developing a homocysteine deficiency increase as you age. Men tend to have a higher risk, especially those who smoke.

Others who are likely to run low on these essential nutrients include pregnant women and breastfeeding mothers; alcoholics or drug users; anyone with kidney disease or on kidney dialysis; and those with diabetes, thyroid disorders, or hormone imbalances.

The Effects of Elevated Homocysteine Levels

Those that experience elevated homocysteine may be at a higher risk of deep vein thrombosis and pulmonary embolism as well as Alzheimer’s disease and other forms of dementia.

Infants who have inherited abnormalities that affect their levels of homocysteine can experience dislocation of the lens in their eye, a sunken chest, Marfan-like appearance (long, thin body type), mental retardation, seizures, and neonatal strokes.  For these reasons, it’s important for infants to get tested early on for the disease, especially if they have a family history of elevated homocysteine.

While high levels of homocysteine can affect everyone, there are certain implications for women. Increased homocysteine has been more prevalent among women that have experienced pregnancy complications, such as preeclampsia, placental abruption, recurrent pregnancy loss, and giving birth to a small, low birthweight baby.

While elevated homocysteine is common with women that fit into this group, it’s even more common for those who have a child with a neural tube defect. Medical research suggests that higher homocysteine levels may be a consequence of these pregnancy and birth complications, rather than the cause.

Elevated levels of homocysteine can take its toll and cause lasting damage, even though there often aren’t many apparent symptoms. If you can identify with any of the risk factors, or if you have a family history of increased levels of homocysteine, be sure to check with your doctor and get you and you children tested.

This condition can be treated with vitamin supplementation and controlled by routine blood tests. So, if you are diagnosed with this condition, be sure to visit your doctor frequently and follow their recommendations.



Sources:
Weil, A., “Elevated Homocysteine,” Weil, https://www.drweil.com/health-wellness/body-mind-spirit/heart/elevated-homocysteine/, last accessed May 19, 2017.

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