The development of national food security information systems is constrained by a lack of guidance on which indicators to use. This paper compares food security indicators across two seasons (summer and winter) in one of the most deprived areas of the Eastern Cape province of South Africa. The results show that only anthropometric indicators are sensitive enough to differentiate levels of food insecurity. The lack of consistent classification across indicators means that surveys must use a combination of food consumption and experience of hunger measures backed up by anthropometric measures. Targeting interventions is difficult if the measures cannot be relied on. Further investigation is needed to identify a suite of appropriate indicators for a national information and surveillance system.
Food is likely to be one of the major pathways through which people are exposed to endocrine-disrupting chemicals. With the exception of residual effects, there are concerns that a number of naturally occurring and synthetic chemicals exert adverse effects upon endocrine systems in wildlife and humans. The current study reports selected pesticide concentrations and the total estrogenic activity of fruit and vegetables using the recombinant yeast oestrogen screen (YES) and T47D-KBluc reporter gene assays. A total of 53 food samples (27 fruit and 26 vegetables) from Johannesburg and Tshwane fresh produce markets (in South Africa) were analysed. Of these, 17 contained one to three different pesticide residues with concentrations ranging between 0.01 and 0.68 mg kg–1, whereas in the rest of the samples no residues were detected. All pesticides detected except in one sample were below the maximum residue level (MRL), but others were unauthorised for use in specified fruit and vegetables. Estrogenic activity was detected in 26.4% (14 samples) of the samples tested, and the estradiol equivalents ranged from 0.007 to 2 pg g–1. Although the estrogenic activity was low, it may contribute to adverse health effects. Continuous monitoring for pesticides in fruit and vegetables is important in view of the unauthorised pesticides detected in produce from South Africa and the endocrine-disrupting chemical activity found.
The effect of compositing red non-tannin sorghum with brownish-cream cowpea and in vitro gastrointestinal digestion on total phenolic and flavonoid contents and antioxidant properties of a sorghum–cowpea composite porridge was studied. Maize–soybean composite porridge was used as a reference sample. Antioxidant properties were studied using radical scavenging activities against the 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid), peroxyl and NO radicals as well as inhibition of low density lipoprotein (LDL) oxidation and oxidative damage of vector DNA. Hydroperoxide content of the samples was also measured. All the samples demonstrated radical scavenging activity. Simulated duodenal digests of the porridges had hydroperoxides and therefore caused LDL oxidation. The undigested porridges and simulated gastric digests inhibited LDL oxidation. Compositing the cereals with legumes increased total phenolic and flavonoid contents and NO scavenging activity of their porridges. In vitro gastrointestinal digestion of the porridges increased their total phenolic and flavonoid contents, radical scavenging activities and LDL oxidation inhibitory activity.
This contribution raises the question about where things have gone wrong in evolutionary history. In classic Christian discourse it is typically assumed that the primary problem is human sin, while the problem of natural evil is emphasised elsewhere. It seeks to test the distinction between natural suffering and socially-induced forms of suffering by exploring the roots of violence between species with reference to the emergence of the act of eating in evolutionary history. It draws on a corpus of recent literature on the consumption of food, with specific reference to the work of Edward Farley, Sallie McFague and Norman Wirzba, in order to address the following question: Is the violence associated with what Christians would redescribe as sin merely an extrapolation of the ‘violence’ embedded in the act of eating? The conclusion from this survey seems to be that an Augustinian approach is indeed less plausible and more counter-intuitive than Manichean or Pelagian assessments of where things have gone wrong in evolutionary history. If so, this would have far-reaching consequences for moral formation. The conclusion is offered here in the hope that it would be refuted by others!
Policy research and scholarship on food has rapidly increased in recent decades. The attention to ‘gender’ within this work appears to signal important practical and academic efforts to mainstream gendered understandings of food consumption, distribution and production into expansive conceptualisations of human security. This article argues that the gender-related work on food has wide-ranging and often troubling political and theoretical foundations and implications. Often growing out of knowledge regimes for managing social crises and advancing neo-liberal solutions, much gender and food security work provides limited interventions into mainstream gender-blind work on the nexus of power struggles, food resources and globalisation. A careful analysis of knowledge production about gender and food is therefore crucial to understanding how and why feminist food studies often transcends and challenges dominant forms of scholarship and research on food security. This article’s critical assessment of what food security studies in South Africa has entailed at the regional level and in global terms also focuses on the methodological and theoretical feminist interventions that can stimulate rigorous conceptual, research and practical attention to what has come to be understood as food sovereignty.
Cardiovascular diseases (CVD) account for 18 million of annual global deaths with more than three quarters of these deaths occurring in low- and middle-income countries (LMIC). In LMIC, the distribution of risk factors is heterogeneous, with urban areas being the worst affected. Despite the availability of effective CVD interventions in developed countries, many poor countries still struggle to provide care due to lack of resources. In addition, many LMIC suffer from staff shortages which pose additional burden to the healthcare system. Regardless of these challenges, there are potentially effective strategies such as task-shifting which have been used for chronic conditions such as HIV to address the human resource crisis. We propose that through task-shifting, certain tasks related to prevention be shifted to non-physician health workers as well as non-nurse health workers such as community health workers. Such steps will allow better coverage of segments of the underserved population. We recognise that for task-shifting to be effective, issues such as clearly defined roles, evaluation, on-going training, and supervision must be addressed.
To determine the factors associated with excessive body fat among black African men and women living in rural and urban communities of South Africa.
This is a cross-sectional analysis of data from the Prospective Urban and Rural Epidemiology (PURE) study, Cape Town, South Africa conducted in 2009/2010. The study sample included 1220 participants (77.2% women) aged 35–70 years, for whom anthropometric measurements were obtained and risk factors documented through face-to-face interviews using validated international PURE study protocols. Sex-specific logistic regression models were used to evaluate socio-demographic, lifestyle and psychological factors associated with three excessive body fat indicators, namely body mass index (BMI), waist circumference (WC) and body fat percent (BF%).
The prevalence of excessive body fat based on BF%, WC and BMI cut-offs were 96.0%, 86.1%, and 81.6% for women respectively, and 62.2%, 25.9%, and 36.0% for men respectively. The significant odds of excessive body fat among the currently married compared to unmarried were 4.1 (95% CI: 1.3–12.5) for BF% and 1.9 (95% CI: 1.3–2.9) for BMI among women; and 4.9 (95% CI: 2.6–9.6), 3.2 (95% CI: 1.6–6.4) and 3.6 (95% CI: 1.9–6.8) for BF%, WC and BMI respectively among men. Age ≤50 years (compared to age >50 years) was inversely associated with excessive BF% in men and women, and less-than-a-college education was inversely associated with excessive BMI and WC in men. Tobacco smoking was inversely associated with all three excessive adiposity indicators in women but not in men. Unemployment,
depression, and stress did not predict excessive body fat in men or women.
This article explains indigenous knowledge, firstly as a social construct, and subsequently in terms of the value it holds for educational practice. Indigenous knowledge (IK) often constitutes the basis of learners’ first experiences and links such experiences, via spontaneous conceptualisation, with scientific phenomena. IK also serves as the primary organiser of learning, with a view to further conceptualisation and schematisation. The exclusion of indigenous knowledge from formal curricula is usually not intentional, and its actual inclusion in learning material can make a valuable contribution towards linking existing knowledge and new information. The article claims that the indigenous knowledge of local populations should be acknowledged to empower curriculum developers and learners. Seeing that indigenous knowledge is interwoven with the social constructs of society, participatory research strategies are suggested to gather, quantify and verify information for curriculum development purposes.
In order to truly be innovative in education, it is sometimes necessary to break away from conventional practices while, at the same time, keeping the students’ best interests in mind. We support the notion that innovation in teaching and learning plays a vital role in the success of an institution and as such have launched innovative initiatives amongst various institutions. These initiatives present various benefits, such as empowering children and supporting well-being through innovative educational wellness indicators and health promoting intervention. Based on the results obtained in this study, and the needs and knowledge based on the teachers and learners, an intervention plan was developed to support positive change within the schools and the community. This intervention plan includes the development of learning content that can be included in the curriculum without adding any additional burden to the teachers as well as the training of teachers to better implement this curriculum. The intervention further aims to assist with social change by guiding the schools in improving their learner feeding scheme and physical activity programme. The TEARS principle is an innovative 5-step enterprise that has been developed and implemented in order to pioneer the necessary changes in education.
One serious concern of health policymakers in South Africa is the fact that there is no national data on the dietary intake of adult South Africans. The only national dietary study was done in children in 1999. Hence, it becomes difficult to plan intervention and strategies to combat malnutrition without national data on adults. The current review consequently assessed all dietary studies in adults from 2000 to June 2015 in an attempt to portray typical adult dietary intakes and to assess possible dietary deficiencies. Notable findings were that, in South Africa micronutrient deficiencies are still highly prevalent and energy intakes varied between very low intakes in informal settlements to very high intakes in urban centers. The most commonly deficient food groups observed are fruit and vegetables, and dairy. This has been attributed to high prices and lack of availability of these food groups in poorer urban areas and townships. In rural areas, access to healthy foods also remains a problem. A national nutrition monitoring system is recommended in order to identify dietary deficiencies in specific population groups.