One of the hormones that control appetite is leptin. Released by fat cells, it normally crosses into the brain and tells it to stop eating.

In many obese people, however, leptin is unable to cross into the brain, as it has trouble penetrating the blood-brain barrier.

Now a new study reveals that not only does leptin regulate appetite, but it also has an important role in keeping learning and memory sharp.

The new findings about leptin, published in the journal Peptides, may be part of the reason obese patients may also have problems with their memory.

As you can see from some of my earlier posts, there is a strong correlation between the amount of food consumed and brain power.

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