For a long time, adequate and balanced nutrition has been seen as crucial mainly for the growth and development of children. However, balanced nutrition is equally important for maintaining optimal health and proper body function in adults.
When an adult's body fails to receive sufficient nutrition, both in terms of quantity and quality, the risk of malnutrition increases. Various factors, such as poor diet, chronic illnesses, digestive issues, or other conditions that affect nutrient absorption, can lead to malnutrition.
Signs of Malnutrition in Adults
Identifying the signs of malnutrition is essential to prevent further health complications. Below are some indicators of malnutrition in adults that you should be aware of:
Unexplained Weight Loss
One of the primary signs of malnutrition is significant weight loss without any intentional effort to lose weight. If weight loss exceeds 5% within a span of 6 months with no clear cause, it may indicate malnutrition. This often results from insufficient calorie and protein intake to meet the body's energy demands.
Persistent Fatigue and Low Energy
Malnourished individuals often feel constantly tired and lack energy. Insufficient calories, protein, and iron can impair the body’s energy production, leading to prolonged fatigue.
Skin Changes
Skin health is closely linked to the daily intake of nutrients, particularly vitamins and minerals like vitamins A, C, E, and essential fatty acids. Malnutrition can lead to dry, rough, and dull-looking skin. A lack of protein may also result in reduced skin elasticity due to decreased collagen production.
Hair Thinning and Breakage
A shortage of protein, iron, biotin, and zinc can cause hair to become fragile, fall out more easily, and lose its natural luster. To maintain healthy hair, the body needs an adequate intake of nutrients. A lack of proper nutrition can disrupt the hair growth cycle, diminishing hair quality.
Brittle Nails
Similar to hair, nails require adequate nutrition for their health. If your nails become brittle, prone to breaking, or develop visible white lines, this could be a sign of malnutrition, especially a deficiency in iron, calcium, or vitamin B complex.
Increased Susceptibility to Illness and Slow Healing Process
The immune system heavily relies on adequate levels of vitamin C, vitamin D, zinc, and protein. A lack of these nutrients makes the body more prone to infections like the flu, coughs, or skin infections.
Additionally, nutrient deficiencies can delay the healing process because low protein levels can hinder tissue repair and slow down recovery.
Difficulty Concentrating and Memory Problems
Deficiencies in nutrients such as iron, vitamin B12, and omega-3 fatty acids can lead to poor concentration, forgetfulness, and brain fog. If left unaddressed, long-term deficiencies in these nutrients may increase the risk of neurodegenerative conditions like dementia.
Overcoming malnutrition involves more than simply consuming large quantities of food. It is important to understand which specific nutritional needs must be met and to follow the appropriate diet for your condition.
If you notice any signs of malnutrition, it is advised to consult a doctor or use the consultation service available on the Ai Care application, which can be downloaded from the App Store or Play Store.
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- dr Hanifa Rahma
NHS Inform (2025). Malnutrition. Available from: https://www.nhsinform.scot/illnesses-and-conditions/nutritional/malnutrition/
Cleveland Clinic (2022). Malnutrition. Available from: https://my.clevelandclinic.org/health/diseases/22987-malnutrition
Carlos Seron-Arbeloa, et all (2022). Malnutrition Screening and Assessment. Available from: https://pmc.ncbi.nlm.nih.gov/articles/PMC9228435/
Mohit Wani, et all (2023). Unveiling Skin Manifestations: Exploring Cutaneous Signs of Malnutrition in Eating Disorders. Available from: https://pmc.ncbi.nlm.nih.gov/articles/PMC10556793/
Jillian Kubala, MS, RD (2021). How Are Weight Loss and Hair Loss Related? All You Need to Know. Available from: https://www.healthline.com/nutrition/weight-loss-and-hair-loss