A new study has found that boys who are exposed to high-fat diet in childhood are likely to experience junk food obsession in adulthood which will lead to obesity. The study was conducted on male rats and found that exposure to high-fat diet from childhood may increase the sensitivity of the dopamine system later in adulthood. Dopamine is a neurotransmitter that plays an important role in sensitisation – the process by which repeated administration of a reward, being pharmacological such as amphetamine – a synthetic, addictive, mood-altering drug, used illegally as a stimulant – or natural such as highly palatable food, causes an increase in response to the reward.

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