Undernutrition among older adults is a big problem – much bigger than most people realize. It can be triggered by a personal loss or change, a sudden medical crisis, or a chronic inflammatory condition. It can result from appetite changes, functional changes, or dental problems. It can happen to people with low incomes or high incomes, to people who are underweight or overweight. It can happen at home, in a nursing home, or in a hospital. It is widespread, it often goes unrecognized, and its consequences are vastly underestimated.



Your brain needs a healthy diet just like the rest of your body. The cells in your brain need the nourishment that comes from food. Food provides your body with carbohydrates, proteins, and fats. It also offers nutrients such as minerals and vitamins that promote brain health.


A healthy diet is important for a strong brain.


Your brain benefits from nutrients such as folic acid, omega-3, and others found in food. Your brain needs these minerals and vitamins to function properly.



Find out what happens in your brain if you don’t eat enough to provide the nutrients it requires:


  1. Shrinking of the brain. When your diet lacks enough nutrients because you’re starving or participating in a fad diet, your brain can shrink.


  • If you don’t get enough B vitamins, your brain can atrophy.


  • In addition, if you don’t get enough amino acids by eating protein or omega-3s from fats, then it can shrink.


  1. Concentration and memory issues. Without the proper amount of nutrients, your brain can’t focus.


  • You may have difficulty concentrating on simple tasks. Math or tasks that are more complex may become impossible.



  1. Brain damage. If you starve or don’t get enough food for long periods of time, brain damage can be the result. This brain damage may or may not be reversible.


  1. Craving food. When you don’t eat enough, you start to crave food. You can’t stop thinking about it or shut off your brain.



  • Your ability to make healthy food choices decreases. Since your brain thinks you’re starving, you’ll eat anything you find. You won’t be able to avoid temptations or stop eating junk food.


  • Research shows that you’re more likely to eat carbohydrates and sweets to try to refuel.


  • The constant cravings for food distract you. They can distract you to the point that you can’t work or study. You may even be in danger as you try to drive or walk since you can’t pay attention to your surroundings.


You may be worried about losing weight, fitting into your old jeans, or looking great in a swimsuit. These things motivate you to reduce your calories and food intake. However, fad diets and desperate attempts to lose weight can leave your brain without the proper nutrients. This is a dangerous and risky practice that can have long-term consequences.


Avoid skipping entire meals for days or weeks at a time. This type of unhealthy practice throws your entire body into starvation mode and hurts your brain, too.



You can avoid overeating without sacrificing important nutrients. You can reduce calories in a healthy way while ensuring you’re getting enough for your height and age. It may take some extra research when considering a diet, but your brain’s health is certainly worth it. Nutrition is vital to strength, healing, and quality of life. Don’t let malnutrition sneak up on the older people in your life. Check-in with them, share a meal together every now and then and stay in touch. If you do suspect a problem, don’t let it turn into a crisis – act early.