Olle Johansson

Olle Johansson
Karolinska Institutet | KI · Department of Neuroscience

PhD

About

351
Publications
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22,621
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Publications

Publications (351)
Article
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Envisioning a technological singularity, Elon Musk, an industrial engineer, in agreement with the late theoretical physicist Stephen Hawking, argued that in the event of full artificial intel�ligence (AI) humans could become extinct (Sparkes, 2015). In describing the techno-science driving this paradigm shift, we argue that scientific evidence for...
Poster
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It brings me great pleasure to unveil our fresco: The face of EMF independent researchers. I would like to express my sincere gratitude for your kind contribution to this image which is worth a thousand words and which I hope will make the public demand that this work be more widely covered in scientific research and in the media. Don't hesitate to...
Article
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Insects, and especially honeybees, are under major threat everywhere around the globe. Current studies lack in the consideration of potential effects which may directly affect other organisms or ecosystems, because of the very limited attention which is usually received by the potential adverse ecological effects of radiofrequency electromagnetic f...
Article
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There are some serious errors and gaps in the study conducted by the Australian Radiation Protection and Nuclear Safety Agency (ARPANSA) and published as ‘Exposure to Radiofrequency Electromagnetic Fields From WiFi in Australian Schools’ by Karipidis et al. We examine in detail the errors in methodology, interpretation of results and inaccurate/mis...
Article
While a good number of studies have demonstrated that modern, man-made ambient electromagnetic fields can have both stimulatory and inhibitory effect on immune system function, the precise mechanisms have yet to be completely elucidated. It is hypothesized here, that depending on the parameters, one of the means by which long-term electromagnetic f...
Article
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It has been hypothesised that mosquitoes [Diptera: Culicidae] may play more of a role in certain cancers than is currently appreciated. Research links 33 infectious agents to cancer, 27 of which have a presence in mosquitoes, and that, in addition, mosquito saliva downregulates the immune system. The objective of this paper is to review the literat...
Article
In the present study, a detailed histological description of the female reproductive tract of South American fur seal (Arctophoca australis) pups has been conducted. The uterine tube was covered by cuboidal to columnar epithelium; nerve fibers were present in the mesosalpinx and beneath the muscular layer. The uterus was bipartitus; the endometrial...
Article
In August 2003, 48-year-old JS of Colorado, USA, a fitness therapist and sports nutritionist, contracted neuroinvasive West Nile virus which left her with disabilities due to spinal axonal damage.In August 2014, she suddenly developed symptoms very much like her acute West Nile infection 11 years ago, including focal seizures, ataxia, vertigo and h...
Presentation
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Background and aim: A rise in exposure to electromagnetic fields (EMF) in the general population in the last two decades (e.g. from Wi-Fi and mobile phone networks) coincides with a rise in prevalence of a broad array of health symptoms; often of allergic/asthmatic/oversensitivity character. Evidence is building up indicating that EMF exposure inde...
Article
The International Agency for Research on Cancer recognises five viruses, one bacterium and three parasites as having a causal relationship to cancer, and one virus, HIV, that by suppressing the immune system assists in the development of cancer. In addition numerous researchers have claimed links between cancer and other viruses and bacteria, many...
Article
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In Sweden, electrohypersensitivity is recognized as a functional impairment which implies only the environment as the culprit. The Swedish view provides persons with this impairment a maximal legal protection, it gives them the right to get accessibility measures for free, as well as governmental subsidies and municipality economic support, and to...
Article
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Chronic diseases and illnesses associated with unspecific symptoms are on the rise. In addition to chronic stress in social and work environments, physical and chemical exposures at home, at work, and during leisure activities are causal or contributing environmental stressors that deserve attention by the general practitioner as well as by all oth...
Article
Our environment is now permeated by anthropogenic radiofrequency electromagnetic radiation, and individuals of all ages are exposed for most of each 24 h period from transmitting devices. Despite claims that children are more likely to be vulnerable than healthy adults to unwanted effects of this exposure, there has been no recent examination of th...
Article
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In the present study we analyze the role of polarization in the biological activity of Electromagnetic Fields (EMFs)/Electromagnetic Radiation (EMR). All types of man-made EMFs/EMR - in contrast to natural EMFs/EMR - are polarized. Polarized EMFs/EMR can have increased biological activity, due to: 1) Ability to produce constructive interference eff...
Article
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We examined whether exposures to mobile phone radiation in biological/clinical experiments should be performed with real-life Electromagnetic Fields (EMFs) emitted by commercially available mobile phone handsets, instead of simulated EMFs emitted by generators or test phones. Real mobile phone emissions are constantly and unpredictably varying and...
Article
Under high levels of radiation (70-100 µW/m2 =175 mV/m), seeds of Brassicaceae Lepidium sativum (cress d’Alinois) never germinated. In fact, the first step of seeds’ germination - e.g. imbibitions of germinal cells - could not occur under radiation, while inside the humid compost such imbibitions occurred and roots slightly developed. When removed...
Article
Abstract In 2002, a paper was published that highlighted the strong correlation noticed between melanoma incidence and the number of surrounding FM transmitters in the Nordic countries since 1955. In the report the development of future numbers of melanoma cases in Estonia were estimated since they got the FM broadcasting system rolled out not unti...
Article
Full-text available
Myelin provides the electrical insulation for the central and peripheral nervous system and develops rapidly in the first years of life, but continues into mid-life or later. Myelin integrity is vital to healthy nervous system development and functioning. This review outlines the development of myelin through life, and then considers the evidence f...
Article
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Objective: To review published data about breast cancer and average life time sleep duration on wave-reflecting spring mattresses, and with rates reported before bodyresonant radiation were at all emitted from broadcasting transmitters, to determine any correlation. Methods: We collected cancer trend data from cancer registries in Sweden, Denmark,...
Article
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To evaluate SAR as a dosimetric quantity for EMF bioeffects, and identify ways for increasing the precision in EMF dosimetry and bioactivity assessment. We discuss the interaction of man-made electromagnetic waves with biological matter and calculate the energy transferred to a single free ion within a cell. We analyze the physics and biology of SA...
Article
The aim of this study was to analyze the morphometric characteristics of ovarian follicles and their distribution in the ovarian cortex in South American fur seal pups (Arctophoca australis). Samples were obtained from animals stranded in the Uruguayan Atlantic coast. Ovaries were dissected, fixed, weighed, and processed by standard histological te...
Article
Abstract Society is confronted with an increasing number of applications making use of wireless communication. We also notice an increasing awareness about potentially harmful effects of the related electromagnetic fields on living organisms. At present, it is not realistic to expect that wireless communication will decrease or disappear within the...
Article
Full-text available
Skin melanoma rates have been increasing for a long time in many Western countries. The object of this study was to apply modern problem-solving theory normally used to clear industrial problems to search for roots and causes of this medical question. Increasing cancer rates can be due to too many cell damage incidents or to too few repairs. So far...
Article
Peripheral nerve fibres are often increased in lesional skin of atopic dermatitis (AD) patients. We attempted to study nerve fibre profiles, using PGP 9.5 as neuronal marker, in early AD lesions in 10 patients, as compared to non-lesional skin in the same patients and skin from healthy controls. The number of PGP 9.5-positive nerve fibre profiles w...
Article
Full-text available
An increasing number of people worldwide complain that they have become electromagnetic hypersensitive (EHS). We conducted a questionnaire survey of EHS persons in Japan. The aim was to identify electromagnetic fields (EMF) and plausible EMF sources that caused their symptoms. Postal questionnaires were distributed via a self-help group, and 75 par...
Article
Full-text available
Objective. To develop a conceptual model for lung cancer rates to describe and quantify observed differences between Sweden and USA contra Japan. Method. A two-parameter lognormal distribution was used to describe the lung cancer rates over time after a 1-year period of smoking. Based on that risk function in combination with smoking prevalence, th...
Article
Unlabelled: Word Heath Organisation (WHO) outlined in 2005 recommendations, how to treat people suffering from the functional impairment electrohypersensitivity in its document "Electromagnetic fields and public health". Unfortunately the reduction of electromagnetic fields was not considered as a treatment option. The aim of the current study was...
Article
The role of the BDJ is to inform its readers of ideas, opinions, developments and key issues in dentistry - clinical, practical and scientific - stimulating interest, debate and discussion amongst dentists of all disciplines.
Article
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In many countries or regions the capacity of health care resources is below the needs of the population and new approaches for health surveillance are needed. Innovative projects, utilizing wireless communication technology, contribute to reliable methods for field-work data collection and reporting to databases. The objective was to describe a new...
Article
The aim of this study was to examine the effect of extremely low-frequency magnetic fields (MF) and the endocrine-disrupting compound atrazine, each separately, on the thyroid gland of juvenile-peripubertal rats, and to investigate the possible synergistic effect of these two factors combined. The study was performed on male Wistar rats from postna...
Article
Increasing evidence shows strong statistical correlations between improved oral hygiene and reduction in the incidence, and mortality, from health care-associated pneumonia among elderly. Therefore, it is important that nursing staff are well educated in oral hygiene. The objective was to describe the design of a new oral hygiene educational progra...
Article
The aim of this survey was to test the impact of an oral hygiene educational model on attitudes and perceptions toward oral hygiene among nursing home staff members. A pilot questionnaire was distributed to the nursing staff before and after a course on oral hygiene at a geriatric nursing home in Stockholm in 2008. The nursing staff was of the opin...
Article
Full-text available
In November, 2009, a scientific panel met in Seletun, Norway, for three days of intensive discussion on existing scientific evidence and public health implications of the unprecedented global exposures to artificial electromagnetic fields (EMF). EMF exposures (static to 300 GHz) result from the use of electric power and from wireless telecommunicat...
Article
The purpose of the precautionary principle is that legal requirements are to be made to safeguard against the possible health risks that have not yet been scientifically established. That a risk is not established cannot, therefore, be used as an excuse for not applying the principle. Yet, that rationale is exactly what is happening in the case of...
Article
Objectives Search strategyMethod for reaching consensusDefinition of small fibre neuropathyMethological issuesNormative reference valuesDiagnostic yield of skin biopsyCorrelation between IENF density and other measures of neuropathySkin biopsy as am easure of outcomeEFNS/PNS standardsProposal for new studiesReferences
Article
The aim of this study was to investigate the presence and density of the nerve fibre-marker protein gene product 9.5 (PGP 9.5), with immunohistochemistry, in skin from patients with hidradenitis suppurativa (HS). Punch biopsies were obtained from 16 patients; 10 with involvement of the groin and six with axillary disease. Specimens were taken from...
Article
To assess attitudes and perceptions towards oral hygiene tasks among geriatric nursing home staff, before and after a dental hygiene education. A survey questionnaire was distributed to the nursing staff (n = 105), at a geriatric nursing home in Stockholm, Sweden. The response rate to the questionnaire was 83%. A vast majority (87%) of the nursing...
Article
Revision of the guidelines on the use of skin biopsy in the diagnosis of peripheral neuropathy, published in 2005, has become appropriate owing to publication of more relevant articles. Most of the new studies focused on small fiber neuropathy (SFN), a subtype of neuropathy for which the diagnosis was first developed through skin biopsy examination...
Article
Revision of the guidelines on the use of skin biopsy in the diagnosis of peripheral neuropathy, published in 2005, has become appropriate due to publication of more relevant papers. Most of the new studies focused on small fiber neuropathy (SFN), a subtype of neuropathy for which the diagnosis was first developed through skin biopsy examination. Th...
Article
This paper is a report of a study evaluating the effect of a repeated education programme for nursing staff in a home for older people. A strong relationship exists between oral infections and general health complications (especially aspiration pneumonia) among nursing home residents and hospitalized older people. Thus, nursing staff need to be edu...
Article
The role of the BDJ is to inform its readers of ideas, opinions, developments and key issues in dentistry - clinical, practical and scientific - stimulating interest, debate and discussion amongst dentists of all disciplines.
Article
Persons, claiming to suffer from exposure to electromagnetic fields, have been described in the literature. In Sweden, electrohypersensitivity (EHS) is an officially fully recognized functional impairment (i.e., it is not regarded as a disease). Survey studies show that somewhere between 230,000 – 290,000 Swedish men and women – out of a population...
Article
Full-text available
The effects of single and combined treatments of the endocrine-disrupting compound atrazine and the power-frequency electromagnetic fields (EMFs) were investigated on cutaneous mast cells in juvenile/peripubertal male Wistar rats. Animals were divided into six groups: (1) 4 h/day exposure to EMFs (50 Hz), (2) 20 mg/kg of body weight (bw) of atrazin...
Article
This paper is a report of a study evaluating the long-term effects on the oral hygiene status of older nursing home residents one and a half years after dental hygiene education was given to the staff. A strong relationship exists between oral infections and general health complications (especially aspiration pneumonia) among nursing home residents...
Article
Full-text available
The aim was to evaluate the need of assistance with daily oral hygiene measures among nursing home resident elderly versus the actual assistance received from the staff. The need of daily oral hygiene assistance was assessed descriptively for nursing home resident elderly who participated in an annual oral health screening in three geographical reg...
Article
The aim of this study was to describe a new dental hygiene education program for nursing staff and to report experiences from the program at a nursing home in Stockholm, Sweden (2006). This strategy comprises 3 steps. The first is individual instruction for nursing staff about oral care for patients and hands-on training in toothbrushing technique...
Article
Breast cancer frequently occurs in the left breast among both women and men [R. Roychoudhuri, V. Putcha, H. Møller, Cancer and laterality: a study of the five major paired organs (UK), Cancer Causes Control 17 (2006) 655-662; M.T. Goodman, K.H. Tung, L.R. Wilkens, Comparative epidemiology of breast cancer among men and women in the US, 1996 to 2000...
Article
Full-text available
The public health situation in Sweden has become drastically worse since the Autumn of 1997. A massive roll-out of GSM main transmitter towers and roof-mounted transmitters that became allowed after mid-1997 led to a booming sale of GSM handsets all over Sweden. The authorities in Sweden have issued a brochure on ‘Radiation from Mobile Systems’ [[1...
Article
Full-text available
A number of papers dealing with the effects of modern, man-made electromagnetic fields (EMFs) on the immune system are summarized in the present review. EMFs disturb immune function through stimulation of various allergic and inflammatory responses, as well as effects on tissue repair processes. Such disturbances increase the risks for various dise...
Article
Nonimmunogenic character of native DNA, and its high immunogenicity when presented in complex with the DNA-binding proteins indicate that the latter might contain molecular triggers of anti-DNA response. To find if this is the case, we have evaluated the autoimmunogenic potential of the main DNA-binding domain of HIV-1 reverse transcriptase that be...
Article
The object of this work was to review recent trends in public health in Sweden. Data on different adverse health indicators were collected from official Swedish registries. We found that population health generally improved during the early 1990s but suddenly started to deteriorate from 1997 onwards. This quite dramatic change is not likely to be e...
Article
At a scientific conference on 27th November 2007 entitled—"Are Present ICNIRP EMF Exposure Recommen-dations Adequate?", hosted by Roger Coghill and Robert Verkerk, at the Royal Society, London, scientists endorsed the BioInitiative Report, extended the 2006 Benevento Res-olution and resolved that: "We, the undersigned, do call on the UK Health Prot...
Article
Full-text available
To develop a personal digital assistant (PDA) application for oral health assessment fieldwork, including back-office and database systems (MobilDent). System design, construction and implementation of PDA, back-office and database systems. System requirements for MobilDent were collected, analysed and translated into system functions. User interfa...
Article
Full-text available
The objective of this study was to investigate the preventive effect of oral hygiene on pneumonia and respiratory tract infection, focusing on elderly people in hospitals and nursing homes, by systematically reviewing effect estimates and methodological quality of randomized controlled trials (RCTs) and to provide an overview of additional clinical...
Article
There are two oestrogen receptors (ERs), ERalpha and ERbeta. ERbeta protein is expressed in human skeletal muscle in the nuclei of both myofibres and endothelial cells, whether ERalpha protein is present in this tissue is unknown. We studied the expression of ERalpha protein in human skeletal muscle biopsies taken from vastus lateralis from four me...
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Methods Cellular Localization of Substance PConclusions ReferencesDiscussionReferences
Chapter
Objectives Search strategyMethod for reaching consensusResultsEU standardsProposal for new studies
Article
Initial tests indicate that personal and occupational use of personal digital assistants (PDAs or palm-held wireless units) produce high intensity bursts of extremely-low frequency electromagnetic fields (ELF-EMF). These emissions could result in comparatively high ELF-EMF exposure in persons that carry a PDA close to the body (i.e., in a pocket or...
Article
The effect of 50 Hz electromagnetic field (EMF) on thyroid gland was studied using light and transmission electron microscopes. Two-month-old male rats were exposed to an EMF (100-300 microT, 54-160 V m(-1)) for 4 h a day, 5 days a week for 1 month. A predominance of microfollicles with less colloid content and dilated blood capillaries was found i...
Article
The mechanisms that regulate intramyocellular triglycerol (IMTG) storage and mobilization are largely unknown. However, during the last decades several intracellular fatty acid binding proteins (FABPs) have been identified. FABP3 is the dominating FABP in skeletal muscle. Expression of additional FABPs is suggested from findings in FABP3-null mutat...
Article
Evidence suggests that neurotrophins may regulate certain immune functions and inflammation. In the present study, the localization and distribution of nerve growth factor (NGF) and its receptors were explored using immunohistochemical methods, with the aim of detecting the cause of the neurohyperplasia in early lesions of atopic dermatitis (AD). I...
Article
To examine the occurrence of the general neuronal marker protein gene product 9.5 (PGP 9.5) in the human corpus (isthmus region) and the cervix uteri during pregnancy and parturition Biopsies were taken from the upper edge of the hysterotomy during caesarean section (CS) at term (n=5), in labor (n=5) and from the corresponding area in the non-pregn...
Article
Full-text available
Recently, a new category of persons, claiming to suffer from exposure to electromagnetic fields, has been described in the literature. In Sweden, electrohypersensitivity (EHS) is an officially fully recognized functional impairment (i.e., it is not regarded as a disease). Survey studies show that somewhere between 230,000-290,000 Swedish men and wo...
Article
The aim of this study was to investigate the influence of extremely low-frequency electromagnetic fields (ELF-EMFs) on mast cells (MCs), parafollicular cells, and nerve fibers in rat skin and thyroid gland. The experiment was performed on 24 2-month-old Wistar male rats exposed for 4h a day, 7 days a week for 1 month to EMFs (50 Hz, 100-300 microT,...
Article
Skin biopsy has become a widely used tool to investigate small calibre sensory nerves including somatic unmyelinated intraepidermal nerve fibres (IENF), dermal myelinated nerve fibres, and autonomic nerve fibres in peripheral neuropathies and other conditions. Different techniques for tissue processing and nerve fibre evaluation have been used. In...
Article
Oestrogen receptor beta (ERbeta) is expressed in human skeletal muscle tissue. In the present study, we have developed an immunohistochemical method to reveal if ERbeta is located within the muscle fibres as well as within capillaries. Skeletal muscle biopsies were obtained from m. quadriceps femoris vastus lateralis in four healthy young subjects....
Article
The objective of this study was to determine whether mast cells (MC) in skin and thyroid gland, cutaneous nerve fibers and eosinophils are sensitive to the influence of electromagnetic fields (EMF). The experiment was performed on two-month-old Wistar male rats, exposed to 50 Hz EMF (100-300 microT, 54-160 V/m) for 4 h a day, seven days a week duri...
Article
Two known oestrogen receptors (ERs), ERalpha and the recently cloned ERbeta, are expressed in the human skeletal muscle of both males and females. The effects of oestrogen and the role of ERs in skeletal muscle tissue are not well known. Oestrogen receptors and some of their target genes are involved in angiogenic processes. It was hypothesized tha...
Article
Object: To analyze the age-specific incidence of malignant melanoma in Sweden since 1958 in order to see if the reported general increase in incidence would be explained by a sudden exposure to an environmental stress to the population. Methods: Incidence data for all age groups was collected from the Swedish National Board of Health and Welfare da...
Article
Full-text available
In an earlier study on malignant melanoma incidence in Sweden, Norway, Denmark and the USA, we found a strong association between the introduction of FM radio broadcasting at full-body resonant frequencies and increasing melanoma incidence. The purpose of the current study was to review mortality and incidence data for malignant melanoma of the ski...
Article
Our knowledge of afferent nerve fiber reinnervation of grafted skin following third-degree burn is limited by a lack of quantitative histological and psychophysical assessment from the same cutaneous area. The current study compares fiber profile and functional recovery measurements in injured and control skin from the same subject. Nerve regenerat...