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Conditions

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Smoking Behaviour and Nicotine Dependence Genetics has little to say about whether someone starts smoking and quite a lot to say about how heavily they smoke once they do — and, unu…

Variants

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rs11030104 BDNF — Body mass index rs6265 BDNF — Smoking behavior rs75945125 BDNF — Brain-derived neurotrophic factor levels

Topics

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Infection and immunity Whether an infection passes or stays is decided as much by the host as by the microbe — and the host genes that decide it are usually the o… Liver The organ people only think about when a blood test comes back odd. Two of its commonest numbers are partly inherited, which is why a raise… Bones and fractures Bone density is one of the more heritable things about a body — and the thing that actually matters, whether it breaks, is much harder to p… Alcohol and the flush One of the few places where a single variant is visible in the mirror. Exercise and muscle The "sprinter gene" is the most oversold result in consumer genetics. Allergies Allergy runs in families and rose too fast for genes to explain. Both of those are true, and holding them together is the whole subject.

Updates

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The Genes Your Parents Didn't Pass On Still Predicted Your Schooling Three million genomes, 3,952 variants, and a result so strange it changes what the whole field means: the DNA your parents did not pass on … Research roundup — September 2026 11 new papers published this month on variants MyGeneLog covers.