Vitamin B1 (thiamine) is a critical cofactor for enzymes that enable your brain and nerves to process glucose into energy. Without it, metabolic “exhaust” (like lactate) builds up, leading to oxidative stress, nerve damage (neuropathy), and cognitive impairment (brain fog). Top 7 Foods Highest in Vitamin B1 (Thiamine) Based on 2025 nutritional data, these foods
