I'm agreeing with CD on this one - to ignore that is a set up to have issues with treatments. Many LLMD's don't understand all the aspects of treatment yet - many don't even understand the importance of detoxing yet! So we can't leave it all up to them, as they are only humans too.
It indicates that you likely have high homosysteine levels:
What a defective (mutated) MTHFR gene does to you:
It produces a defective MTHFR enzyme of different varieties i.e. it functions less than optimally, such as performing at only 40% of its capacity, or 70% of its capacity. It can mean you won’t break down toxins or heavy metals well i.e. you could find yourself with high iron, or high copper, or high lead, or high mercury….etc. High copper can also cause low ferritin, even though your iron levels look great!
The defective enzyme doesn’t break down folate vitamins properly (of which folic acid is the precursor to), which can cause high homocysteine, which can increase your risk of coronary heart disease (arteriosclerotic vascular disease or venous thrombosis), and related heart and BP conditions, as well as increasing your risk for dementia.
Homocysteine is poorly converted to glutathione, which is your body’s chief antioxidant and detoxifier. You are then more susceptible to stress and toxin buildup.
Homocysteine is poorly converted to methionine, and less methionine can raise your risk of arteriosclerosis, fatty liver degenerative disease, anemia (see Wiki), increased inflammation, increased free radical damage… and produce less SAM-e
Less SAM-e can increase depression
And more broadly, an MTHFR defect can increase your risk of a variety of cancers (including breast and prostate cancer), stroke, heart problems, congenital defects, depression, IBS (irritable bowel syndrome), miscarriages, migraines, chemical sensitivities and many conditions.
You can find yourself with high folate or high B12 i.e. your body will have problems converting inactive forms of folate and B12 to the active forms. So the inactive folate or B12 will simply build up in your serum, also inhibiting the active forms. Most serum folate tests are actually measuring folic acid, which needed to be converted to methylfolate to be used metabolically.
The journal Molecular Psychiatry states that “Schizophrenia-like syndromes, bipolar disorder, Parkinson’s disease, Alzheimer’s disease and vascular dementia have all been associated with one or more mutations of the MTHFR gene”. (2006;11, 352–360)
www.stopthethyroidmadness.com/mthfr/ So more detoxing will help, but in order to not have to work your rear end of just detoxing enough, it's best to address those gene mutations.