A new study found that elderly people who eat a carb heavy diet are almost four times as likely to develop mild cognitive impairment (MCI).
Carbs break down into sugars, and sugar plays a role in the development of MCI.
MCI is a precursor to Alzheimer's disease.
Not everyone that has MCI develops Alzheimer's but many do.
5.2 million Americans suffer from Alzheimer's so researchers are doing what they can to find ways to stop MCI before it happens.
The study's lead author said: