Physical

• Dieters who participate in starvation diets suffer from weakness and poor sleeping habits. They may experience stomach issues in addition to the loss of menses in women.
  
  

Behavioral

• Starvation diets contribute to unhealthy behaviors, such as over-analyzing each food, even healthy ones such as fruits and vegetables. Dieters may also drink large amounts of calorie-free, caffeinated beverages.
  
  

Emotional

• Depression and anxiety are both side effects of starvation diets. Furthermore, this type of diet causes mood swings and social withdrawal, according to UCLA.
  
  

Regaining Weight

• Starvation diets cut a significant amount of weight quickly. Therefore, once a dieter resumes regular eating, the weight returns fast. This type of weight gain can damage the heart.
  
  

Eating Disorders

• Although a starvation diet is not intended to be an eating disorder, it often develops into one. Dieters may cheat on their plans by binge eating then purging.