Why Is My Memory Getting Worse? A Nutrition Scientist Explains

If you are noticing that your memory is not as sharp as it used to be, I want you to know first that the worry you are feeling is understandable, and second that noticing the change is different from being powerless over it. Our memory is the gateway to every experience we have ever had, and few things are more unsettling than the sense that it is slipping. In more than 20 years of clinical research on cognition and aging, I have learned that memory decline has real, identifiable causes, and that nutrition has a genuine and underappreciated role in addressing them.

What Is Actually Normal, and What Is Concerning

Some change in memory with age is normal. A change that interferes with your daily life is not, and it deserves a physician’s evaluation. The most useful thing I can do at the outset is help you tell the difference between ordinary, age-related memory change and something that warrants medical attention because clarity here is what replaces fear with a plan. Walking into a room and forgetting why, occasionally misplacing your keys, or needing a moment longer to recall a name are typical features of a normally aging brain, and asking whether memory loss is normal with aging is exactly the right instinct. These lapses reflect a brain that is processing a little more slowly, not a brain that is failing.

What does warrant concern, and a conversation with your doctor, is memory loss that disrupts daily functioning, such as forgetting recently learned information repeatedly, getting lost in familiar places, struggling to follow a conversation or complete familiar tasks, or having others express worry about changes they observe in you. I will not catastrophize because most people who worry about their memory are experiencing normal aging, and I will not minimize because early evaluation matters when the signs are genuinely concerning. My role is to be honest with you about both possibilities, and then to explain what nutrition can do for the far more common situation of healthy, age-related decline.

The Biological Reasons Memory Declines

Memory declines for reasons that are now reasonably well understood, and naming them precisely is what separates a real explanation from vague reassurance. First, synaptic connections, which are the junctions where one neuron communicates with another, become fewer and less efficient with age, and memory is fundamentally a function of these connections. Second, neuroplasticity (i.e., the brain’s ability to form new connections and adapt) slows down, which makes encoding new memories harder. Third, oxidative damage accumulates in neurons over a lifetime, impairing the very cells that store and retrieve memory.

Fourth, the production of key neurotransmitters, the chemical messengers the brain uses to signal, declines with age, and acetylcholine in particular, which is central to memory, depends on nutritional building blocks that many older adults do not consume in adequate amounts. Fifth, the gut-brain axis influences memory through its effect on systemic inflammation, and a disrupted gut can quietly undermine cognition. This is the section where my training as a scientist matters most because each of these mechanisms responds to specific nutritional inputs, and a generic supplement marketed on a single claim cannot address a problem with five distinct drivers.

What Nutrition Science Shows for Memory

The most honest way I can describe the evidence is to walk you through what my own research team actually found because I would never ask you to take a claim on faith that I have not tested myself. In a 12-month clinical study of adults with significant cognitive impairment, we administered an aloe polysaccharide-based multinutrient formula and observed statistically and clinically meaningful improvements in cognitive functioning (Lewis et al., 2013). We then looked deeper at the mechanism and found that the same intervention was associated with improvements in brain-derived neurotrophic factor, the protein that supports the survival and growth of neurons, and that these improvements were related to cognitive performance and immune function (Martin et al., 2017; Stillman et al., 2020). Specific nutrients carry independent support for memory and cognitive aging, including B vitamins in rice bran for neurotransmitter synthesis, choline in sunflower lecithin for acetylcholine production, N-acetyl cysteine for antioxidant defense, and aloe polysaccharides for their immune-modulating and anti-inflammatory effects. I would argue that an effective, broad-spectrum memory supplement can be one of the more powerful tools at your disposal, precisely because it addresses several of the mechanisms of decline at the same time.

What I Recommend and Why

My personal approach to protecting my own memory rests on the same principles I recommend to others, and I practice exactly what I preach. I prioritize sleep and daily movement first, I eat a whole-food, plant-based diet, and I take a broad-spectrum nutritional formula every single day without exception. When I recommend supplementation for memory, I look for a formula that supplies aloe polysaccharides to support the gut-brain axis and immune balance, choline-bearing compounds such as sunflower lecithin for neurotransmitter production, antioxidants such as N-acetyl cysteine to counter oxidative stress, neurotrophic botanicals such as dioscorea, which supplies diosgenin, and a spectrum of phytonutrients such as those found in rice bran. This is the reasoning that produced Daily Brain Care, and I take it myself every day. I would not sell you anything I would not give to my own mother, and that single standard has governed every formulation decision I have ever made.

What to Realistically Expect

I want to set an honest expectation about timing because the truth serves you better than a sales pitch ever could. Nutritional interventions do not produce results overnight, and the published research on cognition reflects intervention periods measured in months, not days (Lewis et al., 2013). In practical terms, I would expect the first subtle signs of improvement, such as recalling names more readily or feeling sharper through a demanding day, to emerge over several weeks of consistent daily use, with more meaningful change accruing over two to three months and beyond. Consistency is everything because the brain rebuilds and protects itself gradually, and an approach taken sporadically cannot deliver what a daily approach can. Honesty about this timeline is, in my view, the single most trustworthy thing a nutrition scientist can offer you.

References

1. Lewis, J. E., McDaniel, H. R., Agronin, M., Loewenstein, D., Riveros, J., Mestre, R., Martinez, M., Colina, N., Abreu, D., Konefal, J., Woolger, J. M., & Ali, K. H. (2013). The effect of an aloe polymannose multinutrient complex on cognitive and immune functioning in Alzheimer’s disease. The Journal of Alzheimer’s Disease, 33, 393-406. doi: 10.3233/JAD-2012-121381. PMID: 22976077. View
2. Martin, A., Stillman, J., Miguez, M. J., McDaniel, H. R., Konefal, J., Woolger, J. M., & Lewis, J. E. (2017). The effect of dietary supplementation on brain-derived neurotrophic factor and cognitive functioning in Alzheimer’s dementia. Journal of Clinical and Translational Research, 3(3), 337-343. PMID: 30895275. View
3. Stillman, J., Martin, A., Miguez, M. J., McDaniel, H. R., Konefal, J., Woolger, J. M., & Lewis, J. E. (2020). Relationship between brain-derived neurotrophic factor and immune function during dietary supplement treatment of elderly with Alzheimer’s dementia. Journal of Clinical and Translational Research, 5(2), 68-75. View

These statements have not been evaluated by the Food and Drug Administration. Daily Brain Care is a dietary supplement and is not intended to diagnose, treat, cure, or prevent any disease. The research described on this page was conducted in clinical populations and is presented to explain the nutritional science behind the formula, not to claim that the product treats any medical condition. Always consult your physician before beginning any new supplement, particularly if you take medication or have a diagnosed health condition.