comment: >
  
  It's not taken as seriously because the amount of people that are dangerously underweight are very far and few between. Your post didn't mention anorexia or other eating disorders so I don't think we are discussing those. Overall, I think it's a relative non-issue, especially in a country like the USA.
context: Don’t forget always being cold, having blueish nails due to poor blood circulation, etc. 
  When I was anorexic a decade ago (and I’m a guy, long story), on top of the things you mentioned like fatigue, nonexistent libido, etc., I was ALWAYS cold and shivering. I took baths as much as possible because it was a sweet relief >
  
  Yep my hands turn purple in winters and my feet are cold year round. It sucks >
  
  It's not taken as seriously because the amount of people that are dangerously underweight are very far and few between. Your post didn't mention anorexia or other eating disorders so I don't think we are discussing those. Overall, I think it's a relative non-issue, especially in a country like the USA. >
  
  Yeahh that's true in developed countries it's not much of an issue because there's alot of food with high calories.
  I don't think I'm dangerously underweight..my BMI is 15 and I look and feel sick all the time the quality of life is shit. >
  
  15 is borderline underweight/healthy weight >
  
  No it's not, its very underweight. 18.5-25 is considered healthy >
  
  One cause of underweight is chronic diarrhea or weak digestive system.  Absorbed nutrients can bleed out of the large intestine.
  Underweight (especially continuously dropping weight) is frequently mentioned in the list of symptoms one must watch for in many digestive disorders and cancer. >
  
  Will look into it..thanks >
  
  OP you should go and see a doctor about that. Human body at it's core function tends to lean towards putting on weight. You either have a crazy metabolism or something is up. >
  
  Happy cake day! And yeah I'll look into it...I do have a high metabolism but my eating habits are bad too.. I hardly hit maybe 1k calories in a day.
  And yk it's kinda like a loop being tired because you didn't eat and then not eating because you're tired. >
  
  Top up calories with energy drinks and fruit juices. Easier than eating if you aren't hungry >
  
  Sure thanks alot! >
  
  Like people above have said, it’s because the opposite is unfortunately much, much more common. I personally blame the marketing schemes boomers fell for and therefore raised us by (I’m a 90’s kid). Ever seen videos of a beach day in the 60’s/70’s? Everyone looked HEALTHY. Not fat or skinny. Then the whole “food pyramid” and “vegetable oil” scheme started to hit. Bit of a tangent there, but the whole unhealthy food craze we had in the 90’s and still have today leads to weight problems on both sides of the scale >
  
  Yeah very true >
  
  Being aneroxic is not great, I do understand. >
  
  What is the issue with being skinny if its not majorly impacting your health ? Why would you want to gain weight ? >
  
  Being underweight affects your health >
  
  Don’t forget always being cold, having blueish nails due to poor blood circulation, etc. 
  When I was anorexic a decade ago (and I’m a guy, long story), on top of the things you mentioned like fatigue, nonexistent libido, etc., I was ALWAYS cold and shivering. I took baths as much as possible because it was a sweet relief >
  
  Yep my hands turn purple in winters and my feet are cold year round. It sucks