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Dietary weight loss may improve neuropathy in obese patients: Study
Weight loss may stabilize neuropathy, according to a recent study published in the Obesity. In the study, after 2 years, successful dietary weight loss in those with severe obesity lead to stable neuropathy as measured by our primary outcome (intraepidermal nerve fiber density).
Neuropathy is a highly prevalent condition that results in pain, falls, and lower quality of life. Although diabetes has long been known to be the leading cause of neuropathy, obesity has recently emerged as an important risk factor. Furthermore, obesity is likely sufficient to cause neuropathy even in those with normal glucose control. In addition to hyperglycemia and obesity, other individual components of metabolic syndrome (hypertension, hypertriglyceridemia, and low high-density lipoprotein [HDL] cholesterol) have also been shown to be associated with neuropathy. Unfortunately, despite multiple potentially modifiable risk factors, the only established disease-modifying therapy for neuropathy is glycemic control, which prevents neuropathy to a much larger degree in type 1 than in type 2 diabetes.
A group of researchers conducted a study to determine the effect of dietary weight loss on neuropathy outcomes in people with severe obesity.
A prospective cohort study of participants attending a medical weight-management program was followed. Weight loss was achieved with meal replacement of 800 kcal/d for 12 weeks and then transitioning to 1,200 to 1,500 kcal/d. The coprimary outcomes were changes in intraepidermal nerve fiber density (IENFD) at the distal leg and proximal thigh. Secondary outcomes included nerve conduction studies, Michigan Neuropathy Screening Instrument questionnaire and exam, Quality of Life in Neurological Disorders, and quantitative sensory testing.
The Results of the study are as follows:
Among 131 baseline participants, 72 (mean [SD] age: 50.1 [10.5] years, 51.4% female) completed 2 years of follow-up. Participants lost 12.4 (11.8) kg. All metabolic syndrome components improved with the exception of blood pressure. IENFD in the distal leg (0.4 [3.3], p = 0.29), and proximal thigh (0.3 [6.3], p = 0.74) did not significantly change. Improvements were observed on the Michigan Neuropathy Screening Instrument questionnaire, two Quality of Life in Neurological Disorders subdomains, and quantitative sensory testing cold threshold.
Thus, the researchers concluded that dietary weight loss was associated with improvements in all metabolic parameters except blood pressure, and both IENFD outcomes remained stable after 2 years. Given that natural history studies reveal decreases in IENFD over time, dietary weight loss may halt this progression, but randomized controlled trials are needed.
Reference:
Dietary weight loss in people with severe obesity stabilizes neuropathy and improves symptomatology by Brian C. Callaghan et al. published in the Obesity.
https://doi.org/10.1002/oby.23246
Dr. Shravani Dali has completed her BDS from Pravara institute of medical sciences, loni. Following which she extensively worked in the healthcare sector for 2+ years. She has been actively involved in writing blogs in field of health and wellness. Currently she is pursuing her Masters of public health-health administration from Tata institute of social sciences. She can be contacted at editorial@medicaldialogues.in.
Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751