It has frequently been reported that exposure to artificial light at night (ALAN) may cause negative health effects, such as breast cancer, circadian phase disruption and sleep disorders. Here, we reviewed the literature assessing the effects of human exposure to ALAN in order to list the health effects of various aspects of ALAN. Several electronic databases were searched for articles, published through August 2014, related to assessing the effects of exposure to ALAN on human health; these also included the details of experiments on such exposure. A total of 85 articles were included in the review. Several observational studies showed that outdoor ALAN levels are a risk factor for breast cancer and reported that indoor light intensity and individual lighting habits were relevant to this risk. Exposure to artificial bright light during the nighttime suppresses melatonin secretion, increases sleep onset latency (SOL) and increases alertness. Circadian misalignment caused by chronic ALAN exposure may have negative effects on the psychological, cardiovascular and/or metabolic functions. ALAN also causes circadian phase disruption, which increases with longer duration of exposure and with exposure later in the evening. It has also been reported that shorter wavelengths of light preferentially disturb melatonin secretion and cause circadian phase shifts, even if the light is not bright. This literature review may be helpful to understand the health effects of ALAN exposure and suggests that it is necessary to consider various characteristics of artificial light, beyond mere intensity.

Cameroon is classified by the World Health Organization (WHO) as having a critical shortage of health personnel. This is further complicated by the geographic distributional inequalities of the national health workforce. This shortfall impedes Cameroons’ progress of improving the human resources for health (HRH) to meet up with the Millennium Development Goals (MDGs) by 2015. However, it is unknown whether the health workforce of Cameroon is distributed equally across geographic regions. Additionally, indicators other than population levels have not been used to measure health care needs. This study aimed to assess the adequacy, evenness of distribution and challenges faced by the health workforce across the different regions of Cameroon. National health personnel availability and distribution were assessed by use of end-of-year census data for 2011 obtained from the MoPH data base. The inequalities and distribution of the workforce were estimated using Gini coefficient and Lorenz curve and linear regression was used to determine the relation between health personnel density and selected health outcomes. Alternative indicators to determine health care needs were illustrated using concentration curves. Significant geographic inequalities in the availability of health workforce exist in Cameroon. Some regions have a higher number of physicians (per person) than others leading to poor health outcomes across the regions. 70 % of regions have a density of health personnel-to-population per 1,000 that is less than 1.5, implying acute shortage of health personnel. Poor working and living conditions, coupled with limited opportunities for career progress accounted for some documented 232 physicians and 205 nurses that migrated from the public sector. Significant distributional inequality was noticed when under-five infant mortality and malaria prevalence rate were used as indicators to measure health care needs. Our results show an absolute shortage of public health personnel in Cameroon that is further complicated by the geographic distributional inequalities across the regions of the nation. Cameroon aims to achieve universal health coverage by 2035; to realize this objective, policies targeting training, recruitment, retention and effective deployment of motivated and supported health workforce as well as the development and improvement of health infrastructures remain the major challenge.

Moon J, et al. J Glob Health Sci. 2019 Jul;1:e45. https://doi.org/10.35500/jghs.2019.1.e45

Objectives: To identify factors associated with the continuum of maternal, newborn and child health care in The Gambia.Design: A secondary statistical analysis using Demographic and Health Survey conducted in 2013.Setting: The Gambia.Participants: 1308 married women (or with a partner) whose most recent children were aged 12–23 months at the time of the survey.Outcome measures: The main outcome was continuum of care for maternal, newborn and child health. The modified composite coverage index was calculated to express the completion level of continuum of care.Results: The following factors were associated with the continuum of maternal, newborn and child health care: women’s autonomy in decision-making of her own healthcare (β=0.063, p=0.015), having higher educated husbands (β=0.138, p<0.001), listening to the radio at least once a week (β=0.078, p=0.006), having a child with birth order less than 5 (β=0.069, p=0.037), initiating the first antenatal care within 16 weeks of pregnancy (β=0.170, p<0.001), having been informed of signs of pregnancy complications (β=0.057, p=0.029), living in rural areas (β=−0.107, p=0.006) and having higher burden due to distance to health facility (β=−0.100, p<0.001), with an explanatory power of 15.5% (R²=0.155).Conclusions: Efforts on future policies and programmes should focus on the concept of continuum of care considering the associated factors. In particular, more attention should be given to providing country-wide family planning and education to women, men and community members in The Gambia.