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American Journal of Medical Case Reports, 2015, Vol. 3, No. 7, 212-215
Available online at http://pubs.sciepub.com/ajmcr/3/7/8
© Science and Education Publishing
DOI:10.12691/ajmcr-3-7-8
NREM-sleep Associated Epileptiform Discharges
Disappeared Following a Shift toward the Paleolithic
Ketogenic Diet in a Child with Extensive Cortical
Malformation
Zsófia Clemens1,2,*, Anna Kelemen3, Csaba Tóth1
1Paleomedicina Hungary Ltd., Evolutionary Medicine Working Group, Budapest, Hungary
2Neurological Department, University of Pécs, Pécs, Hungary
3Department of Neurology, National Institute of Clinical Neuroscience, Budapest, Hungary
*Corresponding author: clemenszsofia@gmail.com
Received May 30, 2015; Revised June 09, 2015; Accepted June 11, 2015
Abstract Purpose: Although the classical ketogenic diet is an effective treatment in childhood epilepsy, it is
difficult to maintain on the long term due to side-effects and dislike. Methods: Here we report a case of a child with
frequent epileptiform discharges confined to non-rapid-eye-movement (NREM) sleep and extensive cortical
malformation. The child was started on a modified version of the classical ketogenic diet we refer to as the
paleolithic ketogenic diet. Results: Subsequent follow-up electroencephalograms showed complete normalization of
brain electric activity along with cognitive improvement. Neither antiepileptic medication nor vitamin supplements
were used. The child strongly adhered to the diet as assessed by regular urinary ketone tests and laboratory work ups.
Currently she is on the diet for 17 months. Neither side effects nor clinical signs of nutrient deficiency were
observed. Conclusion: We conclude that the paleolithic ketogenic diet was effective, safe and feasible in this case.
Keywords: epilepsy, ketogenic diet, paleolithic diet, non-rapid-eye-movement sleep, interictal epileptiform
discharges
Cite This Article: Zsófia Clemens, Anna Kelemen, and Csaba Tóth, “NREM-sleep Associated Epileptiform
Discharges Disappeared Following a Shift toward the Paleolithic Ketogenic Diet in a Child with Extensive
Cortical Malformation.” American Journal of Medical Case Reports, vol. 3, no. 7 (2015): 212-215. doi:
10.12691/ajmcr-3-7-8.
1. Introduction
The ketogenic diet has been used in the treatment of
epilepsy for 90 years [1]. Several studies, including
randomized controlled studies [2], proved its effectiveness
which compares to that of antiepileptic drugs while
probably confering less side-effects [1]. Current
epileptological practice, however, continue to rely on
antiepileptic drugs and the ketogenic diet is not
recommended as a first-line therapy except for two rare
epilepsy syndromes[3]. Previously it was suggested that
ketosis represent an evolutionary adapted state in humans
[4]. In 1975 gastroenterologist Voegtlin suggested an
animal fat-meat based diet as being evolutionarily adapted
[5]. Recently we reported a case of a child with absence
epilepsy successfully treated with an animal fat-meat
based diet we refer to as the paleolithic ketogenic diet [6].
Here we report a case of a child with developmental delay,
extensive bilateral cortical malformation and frequent
interictal epileptic discharges confined to non-rapid-eye-
movement (NREM) sleep electroencephalogram
(EEG).The child started the paleolithic ketogenic diet
which she strongly adhered to. Follow-up EEGs showed
complete normalization of the EEG along with
improvements in cognition.
2. Case Report
The child was born at full term with no complications
in 2007. A routine ultrasound examination at 10 days old
showed enlarged ventricles of the brain. Her muscles were
spastic and she had difficulties with feeding. A repeated
ultrasund examination at 1 year old showed moderately
enlarged ventricles but no signs of intracranial
hypertension. An MRI examination performed in October
2012 showed extensive bilateral polymicrogyria involving
all brain lobes except for the frontal lobe. The MRI also
indicated septal agenesia and hypogenesis of the corpus
callosum. Additional dismorphic features included
microcephaly, hypertelorism, arched palate and
dysmorphic auricles. Genetic tests for subtelomeric
deletion, Angelman syndrome and congenital
glycosylation disorder were negative. Due to a delay in
motor development she has been receiving movement
therapy. She had a complex cognitive developmental
American Journal of Medical Case Reports 213
delay including attention deficit an inability to speak. She
has also been receiving interventions to improve cognition.
A whole-night EEG performed on 02 Aug 2013 showed
frequent multifocal epileptiform discharges confined to
non-rapid-eye-movement (NREM) sleep (Figure 1).
Interictal epileptic discharges were continuous during
NREM stage 2 and were very frequent during NREM
stage 3 and 4. No epileptiform discharges were seen
during wakefulness. The child had no history of ouvert
seizures. Parents of the child refused antiepileptic
medication and decided to initiate the paleolithic
ketogenic diet. The child shifted from the normal diet
toward the paleolithic ketogenic diet gradually within one
month. In December 2013 multiple fasciotomy was
performed at a foreign clinic to alleviate muscle
contractures. From 01 January 2014 the child was on a full
paleolithic ketogenic diet. The diet mostly consisted of
animal fat, meat, offal with a fat:protein ratio of at least
2:1. Fat and red meats as well as offal from pork and cattle
were encouraged. She was allowed to consume vegetables
to an extent which did not prevent ketosis as regularly
assessed by urinary ketone test. Although we did not
recommend it, she also used coconut flour in small
amounts to make the diet more palatable. No plant oil of
any form were allowed. Artificial sweeteners were
restricted but small amounts of honey was allowed. At
diet initiation we advised against taking vitamin and
mineral supplements and so the child stopped all
supplements she was taking before. Ketosis was regularly
checked by urinary ketone strips which indicated
sustained ketosis. Laboratory check-ups were carried out
five times during the 17 months on the diet. All five
urinary laboratory tests were positive for ketones. Avarage
blood glucose was 3.98 (± 0.42) mmol/l. Blood count,
renal and liver function were normal. Inflammatory
markers, including CRP and fibrinogen, as well as
triglicerides and uric acid remained low. Total cholesterol
and LDL were elevated (Table 1). On 02 February 2014,
four weeks after diet onset, a whole-night sleep EEG was
performed. This showed normal sleep structure and the
absence of clear-cut epileptiform activity. The EEG only
showed infrequent waveforms during NREM sleep that
were sharper in morphology (Figure 2). As before no EEG
abnormalities were seen during wakefulness. Four months
later on 14 Jun 2014 a next whole-night EEG recording
showed normal sleep structure, normal background
activity and the absence of epileptiform activity (Figure 3).
Figure 1. EEG during NREM stage 2 sleep recorded on 02 Aug 2013 while on a normal diet. Note frequent multifocal epileptiform activity
Figure 2. EEG during NREM stage 2 sleep recorded on 02 Feb 2014 four weeks after the onset of the paleolithic ketogenic diet. Normal EEG
214 American Journal of Medical Case Reports
Figure 3. EEG during NREM stage 2 sleep recorded on 14 Jun 2014 six months after the onset of the paleolithic ketogenic diet. Normal EEG
Table 1. Laboratory data while on a normal diet (on 11 November
2013) and on the paleolithic ketogenic diet 13 months later (on 13
December 2014). Note that except for cholesterol and LDL
cholesterol all parameters fall in the normal range while on the
paleolithic ketogenic diet
Normal diet Paleolithic-ketogenic diet
Sodium 140 138 mmol/l
Potassium 4.5 4.7 mmol/l
Calcium 2.58 2.42 mmol/l
Magnesium 0.83 0.9 mmol/l
Carbamide 6.6 3.4 mmol/l
Creatinine 33 23 μmol/l
Glucose 3.9 3.9 mmol/l
HgA1c 5.2 4.8 %
Total cholesterol 6.1 12.3 mmol/l
HDL cholesterol 1.57 1.44 mmol/l
LDL cholesterol 4.23 10.85 mmol/l
Triglyceride 0.49 0.76 mmol/l
Uric acid 168 209 μmol/l
Total protein 77 73 G/l
WBC 5.4 4.9 G/l
RBC 4.8 4.4 T/l
Iron 6.1 17.8 μmol/l
Hemoglobin 124 126 g/l
GOT 30 28 U/l
GPT 13 16 U/l
GGT 11 13 U/l
ALP 220 197 U/l
fibrinogen 3.59 2.44 g/l
CRP 0.3 0.1 mg/l
Abbreviations: HgA1c – glycated hemoglobin, HDL - high density
lipoprotein, LDL – low density lipoprotein, WBC – white blood cell
count, RBC – red blood cell count, GOT – glutamate-oxaloacetate
transaminase, GPT – glutamate-pyruvate transaminase, GGT – gamma-
glutamyl transferase, ALP – alkaline phosphatase, CRP – C-reactive
protein
As reported by the parents adhering to the diet was
relatively easy for the child. Currently she is on the
paleolithic ketogenic diet for 17 months. The parents of
the child are committed to continue the diet. Neither
gastrointestinal nor other side effects emerged. Also, no
clinical signs of vitamin or mineral deficiencies emerged.
Parents of the child gave written informed consent for
publication of this case.
3. Discussion
Sleep, and especially NREM sleep, is critically
involved in a variety of cognitive functions [7,8]. Frequent
epileptic activity during NREM sleep is thought to
deteriorate sleep-related cognitive processing in epileptic
children [9]. Landau-Kleffner syndrome is a form of
epilepsy presenting without seizures but with epileptic
activity over the sylvian region resulting is a loss of
language skills [10]. Our patient, however, may not be
classified as having Landau-Kleffner syndrome given the
more widespread morphological and EEG abnormalities
and the complexity of her developmental delay.
The parents of the child refused antiepileptic
medication and therefore the paleolithic ketogenic diet
was initiated as a stand-alone therapy. Follow up sleep-
EEG performed at four weeks on the diet showed the
absence of clear-cut epileptiform discharges during
NREM sleep. A next sleep-EEG performed at five months
after diet onset showed no epileptiform EEG activity at all.
Parents and caretakers of the child noted improvements in
cognition including learning, concentration, speech
comprehension as well as improvements in vocalization
and motor skills. Parent reports, home monitoring of
urinary ketone as well as laboratory check-ups showed an
excellent adherence to the diet and sustained ketosis. Her
laboratory parameters were normal except for total
cholesterol and LDL cholesterol which were elevated. In
our previous case with absence epilepsy [6] and in another
case of type 1 diabetes [11] on the paleolithic ketogenic
diet these two laboratory measures were also elevated
although not to this extent. Elevation of cholesterol is also
known from studies with the classical ketogenic diet [12].
Yet it is now acknowledged that neither serum nor dietary
cholesterol should be regarded as a risk factor for
cardiovascular disease [13]. Instead, other laboratory
American Journal of Medical Case Reports 215
parameters including C-reactive protein [14] and
fibrinogen [15] have been suggested as better predictors of
cardiovascular disease. Of note, these latter measures were
consistently low in our patient. We speculate that in our
patient elevated cholesterol may reflect ongoing
regenerative processes. Other laboratory parameters
including uric acid and triglycerides were normal like in
our other patients on the paleolithic ketogenic diet
[6,11,16]. Adverse effects known to be associated with the
classical ketogenic diet such as iron-deficiency anemia,
hypomagnesemia, increased frequency of infections and
gastrointestinal side effects [17] did not emerge in our
patient on the paleolithic ketogenic diet despite of the
absence of supplementation. Of note, no such adverse
effects were seen in our previous cases on the paleolithic
ketogenic diet [6,11,16]. It is worth noting that the
complete normalization of the EEG, in terms of
disappearence of interictal epileptiform spikes, seen in our
both epilepsy cases on the paleolithic ketogenic diet is
very rare among patients on the classical ketogenic diet
[18].
At the time of writing this manuscript the patient is on
the diet for 17 months. We believe that the paleolithic
ketogenic diet may be remedial while confering neither
side effects nor deficiencies because it is of full nutritional
value matching the human evolutionary needs [19,20].
Compliance with Ethical Standards
The authors declared no potential conflicts of interest.
The case study was done in accordance with the Helsinki
Declaration of 1975. Informed consent was obtained the
parents of the child. The authors received no financial
support for the research.
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