Neurology magazine has recently published a study that links obesity to less brainpower. We've come to believe that eating that tuna sandwich does give us the right amino acids to boost our brain's power, but eating way too many tuna sandwiches apparently isn't really helpful. Blame it all on the BMI.

The seven-year study involved 2,223 salaried French workers aged 32 to 62. Its aim is to find out if there's any connection between the body-mass index (BMI) and the person's mental cognition. Overweight people have BMI of 25 and above.

Apparently, the results showed that thinner people (with lower BMIs) remembered more words in the memory and cognitive tests. Five years later, they still scored better than their flabbier counterparts. Note that the differences such as education level, age, gender and other factors were taken into account to render the results as accurate.

Although the results of the study have proven that fat can affect the brain's cognitive power, it's far more insightful to know that obesity is an all-encompassing issue that affects our entire lifestyle, more than just our physical conditions. The study does prove that "obesity in midlife may have long term consequences for the brain, not just for the heart." Is that news anymore?

Tuna sandwiches are way to good to be passed up, so go ahead and eat. But before it sinks down there and bloat your belly, burn it up on the treadmill. You'll live longer and smarter that way.