Sweet preference, sugar addiction and the familial history of alcohol dependence: shared neural pathways and genes.
Level 5 - mechanism / opinion, no new human data
Narrative review synthesizing mechanistic animal and human observational studies without systematic methodology
PubMed 20648910 · doi:10.1080/02791072.2010.10400687
What was done
Narrative review synthesizing findings from human and animal literature on the shared neurobiological reward pathways, behavioral manifestations, and genetic markers linking sweet preference, sugar addiction, and familial history of alcohol dependence.
What was found
The abstract reports no quantitative values, sample sizes, or effect estimates. It summarizes that high sweet preference is prevalent in alcohol- and drug-dependent individuals and biological offspring of paternal alcoholics; that sugar consumption activates endorphin and dopamine signaling in the nucleus accumbens similarly to drugs of abuse; and that genetic markers such as the dopamine D2 receptor A1 allele are shared across alcohol dependence, bulimia, and obesity.
Why it matters
The paper summarizes evidence that food and drug addictions share overlapping neurobiological and genetic architecture, which may help explain dietary patterns and eating disorders in families with a history of alcohol dependence.
Limits
As a narrative review with no primary data reported in the abstract, findings are limited by potential selection bias, reliance on animal models, and a lack of quantitative statistical measures.
Cited by
- supports Sugar consumption stimulates dopamine release in the nucleus accumbens, activating the same reward pathway as drugs of abuse and alcohol.