Experiences of baby-led weaning: trust, control and renegotiation.

Baby-led weaning (BLW) is an approach to introducing solid foods that relies on the presence of self-feeding skills and is increasing in popularity in the UK and New Zealand. This study aimed to investigate the reported experiences and feelings of mothers using a BLW approach in order to better understand the experiences of the mother and infant, the benefits and challenges of the approach, and the beliefs that underpin these experiences. Fifteen UK mothers were interviewed over the course of a series of five emails using a semi-structured approach. The email transcripts were anonymised and analysed using thematic analysis. There were four main themes identified from the analysis: (1) trusting the child; (2) parental control and responsibility; (3) precious milk; and (4) renegotiating BLW. The themes identified reflect a range of ideals and pressures that this group of mothers tried to negotiate in order to provide their infants with a positive and healthy introduction to solid foods. One of the key issues of potential concern is the timing at which some of the children ingested complementary foods. Although complementary foods were made available to the infants at 6 months of age, in many cases they were not ingested until much later. These findings have potentially important implications for mother's decision-making, health professional policy and practice, and future research.

Industrial-strength ecology: trade-offs and opportunities in algal biofuel production.

Microalgae represent one of the most promising groups of candidate organisms for replacing fossil fuels with contemporary primary production as a renewable source of energy. Algae can produce many times more biomass per unit area than terrestrial crop plants, easing the competing demands for land with food crops and native ecosystems. However, several aspects of algal biology present unique challenges to the industrial-scale aquaculture of photosynthetic microorganisms. These include high susceptibility to invading aquatic consumers and weeds, as well as prodigious requirements for nutrients that may compete with the fertiliser demands of other crops. Most research on algal biofuel technologies approaches these problems from a cellular or genetic perspective, attempting either to engineer or select algal strains with particular traits. However, inherent functional trade-offs may limit the capacity of genetic selection or synthetic biology to simultaneously optimise multiple functional traits for biofuel productivity and resilience. We argue that a community engineering approach that manages microalgal diversity, species composition and environmental conditions may lead to more robust and productive biofuel ecosystems. We review evidence for trade-offs, challenges and opportunities in algal biofuel cultivation with a goal of guiding research towards intensifying bioenergy production using established principles of community and ecosystem ecology.

All-cause mortality after non-fatal self-poisoning: a cohort study.

BACKGROUND: Suicide has been repeatedly shown to have greatly increased incidence after non-fatal self-harm but far less is known about early death from other causes. The present study's aim was to describe mortality and risk factors concerning all causes of death after non-fatal self-poisoning. METHODS: A prospective cohort study of 976 patients who attended the Emergency Department in Nottingham, UK during a 9-month period in 1985-1986. Information on deaths was obtained for 16 years following an episode of self-poisoning, from the records of the Office for National Statistics. RESULTS: The observed:expected ratio for all-cause mortality was 2.2. Deaths due to diseases of the digestive and respiratory systems were, respectively, 4.4 and 2.9 times more frequent than expected. The risk for accidents was sixfold and for probable suicides 17-fold when compared with the risk in the general population. The main risk factor for subsequent deaths from natural causes was increasing age. CONCLUSIONS: The findings of this study suggest that patients who survive self-poisoning have an increased risk of death from natural and unnatural causes. The findings point towards the need for more effective clinical management and preventive initiatives.