Your brain is about 60 percent fat. And the most important fat in your brain is DHA, which is one of the two main omega-3 fatty acids. DHA is literally the building material of your brain cells. It makes up a huge proportion of the cell membranes in your neurons, particularly in the areas responsible for memory and learning. When DHA levels are low, your brain cell membranes become stiff and less responsive. Signals between neurons slow down. Communication breaks down. Over time this shows up as brain fog, poor memory, and difficulty learning new things. When DHA levels are optimal, the opposite happens. Your brain cells communicate faster and more efficiently. Inflammation in the brain decreases. And your brain's ability to form new connections, that neuroplasticity we talked about earlier, improves significantly. Most people are not getting enough omega-3 from diet alone. Fatty fish like salmon, mackerel, and sardines are the best sources, but you would need to eat them three to four times per week to maintain optimal levels. Most people do not come close to that. Supplementing is the practical solution. The form matters here. Look for triglyceride form fish oil, not ethyl ester. Triglyceride is the natural form found in fish and your body absorbs it about 70 percent better. Check the label for the actual DHA content, not just total omega-3. You want at least 1000 milligrams of DHA per day for brain benefits. Take it with a meal that contains fat for best absorption. Now you have the full picture. Magnesium l-threonate for connections. Lion's Mane for growth. Choline for memory chemistry. Omega-3 DHA for brain structure. These four work on completely different pathways, and together they give your brain everything it needs to perform and protect itself. Let me put it all together for you in the brain stack. I will give you the exact doses, the timing, and how to take them all together.