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Epigenetics and epidemiology -- hip, hype and science

New research in epigenetics explores the impact of environmental factors on gene expression, shedding light on the relationship between diet, lifestyle, and disease. The study suggests that environmentally induced epigenetic changes may not persist across generations, challenging the idea of an 'epigenetic designer baby'.

SourceOxford University Press UK·JournalInternational Journal of Epidemiology·DateMar 15, 2012

The unsolved mystery of kava toxicity

A new review of scientific knowledge on kava reveals no consensus on its toxicity, with various theories including preparation methods and genetic differences. Pacific Island cultures have safely consumed kava for centuries, but Western countries have reported liver damage and banned or regulated kava products.

SourceAmerican Chemical Society·JournalChemical Research in Toxicology·DateJul 13, 2011

Is most published research really false?

Researchers debate the validity of published research findings, exploring the role of replication in confirming hypotheses. New models suggest that probabilities for accepting false research findings depend on benefits and harms, sparking discussion on acceptable levels of error.

SourcePLOS·JournalPLOS Medicine·DateFeb 26, 2007

Embryos exposed in 3-D

A new method called microCT-based virtual histology allows scientists to quickly examine large numbers of mouse embryos with different genetic mutations or damage from toxic chemicals. This enables them to determine the normal function of many genes faster than existing methods, improving drug safety and efficacy.

SourceUniversity of Utah·JournalPLOS Genetics·DateMay 4, 2006

Lasers to the aid of embryos

Researchers are using lasers to aid embryonic development by precision-drilling the 'shell' of human eggs. This technique has shown improved IVF success rates and increased implantation rates, allowing embryos to embed themselves in the womb more effectively.

New analysis sheds light on Earth's origins

Researchers at University of Michigan and Swiss Federal Institute of Technology propose alternative theory on Earth's formation. They found that tungsten isotopic compositions of Earth do not match those of enstatite chondrites, supporting the idea that planets received materials from broad regions of the solar system.