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Frequent colds, infections, and fatigue are signs you may have a low immune system — here's when to see a doctor

Written by Tabitha Britt
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This article was medically reviewed by Jason R. McKnight, MD, MS, a family medicine physician and clinical assistant professor at Texas A&M College of Medicine. 
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Symptoms of a low immune system include fatigue, frequent colds, and increased stress levels. Roos Koole/Getty Images
  • A low immune system can be caused by a number of factors including, diet, certain medications, infections, or having an autoimmune disorder. 
  • If you're having frequent colds, difficulty fighting off infections, persistent fatigue, or digestive issues, you may have a weakened immune system.
  • Eating a balanced diet, getting plenty of sleep, and exercising regularly may help strengthen your immune system. 
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<span><a href="https://www.linkedin.com/in/tabithashiflett/">Tabitha Britt </a>is a New York-based freelance writer and editor. When she's not glued to her computer screen, she can be found walking her beloved pooch, Biscuit. Aside from writing for INSIDER, Tabitha is also the founding editor-in-chief of <a href="https://doyouendo.com/">DO YOU ENDO</a> — the first no-BS endometriosis magazine (by individuals with endometriosis, for individuals with endometriosis) in America. She earned her Master's degree in Creative Publishing and Critical Journalism from The New School of Social Research. </span>
Tabitha Britt
Tabitha Britt is a New York-based freelance writer and editor. When she's not glued to her computer screen, she can be found walking her beloved pooch, Biscuit. Aside from writing for INSIDER, Tabitha is also the founding editor-in-chief of DO YOU ENDO — the first no-BS endometriosis magazine (by individuals with endometriosis, for individuals with endometriosis) in America. She earned her Master's degree in Creative Publishing and Critical Journalism from The New School of Social Research. 
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