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Doctor insights on: What Are The Causes Of Underweight Children

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What to do if I have to repeat pe 'cause I'm "underweight"?

What to do if I have to repeat pe 'cause I'm "underweight"?

PE and low weight: This does not sound reasonable: repeat PE because you are underweight? Good exercise AND healthy eating are essential for good weight (some blame can be placed on the genes you may have inherited if you have a small build). Please verify what is being required of you at PE ...Read more

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Dr. Syed H. Sajid
123 Doctors shared insights

Low Body Weight (Definition)

Body mass index (BMI) uses a man or woman’s height & weight to estimate body fat. Many consider a BMI of less than 18.5 kg/ ...Read more


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Is a baby born at 5lbs severly underweight, what could be the causes? Risks for future?

Is a baby born at 5lbs severly underweight, what could be the causes? Risks for future?

Gestational age?: You don't mention how far along you were. If you were term (37+ weeks), 5 pounds is small but not what I would call "severely underweight". Usually there was some reason for poor placental blood flow, and baby didn't grow as much. Good news is these kids do great and the baby will likely gain weight quickly if otherwise healthy. If you are a smoker, would suggest smoking cessation - good for both. ...Read more

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Could have being underweight caused my miscarriages?

Could have being underweight caused my miscarriages?

Only if unhealthy: Being underweight in its self is not a barrier to pregnancy if otherwise healthy. Eat healthy and exercise regularly. Watch all medications including Advil (ibuprofen) and Aspirin while pregnant or trying to get pregnant. If significantly underweight talk to your physician about good nutrition. No smoking or alcohol. Good luck and good health. ...Read more

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I have had two miscarriages, can being underweight be the cause of them?

I have had two miscarriages, can being underweight be the cause of them?

Yes: Up to 70% increase in a study in 2006. But if you pay attention no nutrition, it will improve. ...Read more

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What could have caused me to hit puberty earlier than my friends even though I was underweight?

What could have caused me to hit puberty earlier than my friends even though I was underweight?

Genetics: How and why puberty starts is derived from an interplay of general health, genetic and nutritional factors. If you started before your friends, some genetic factor likely turned it on earlier. Most kids follow the pattern of a parent, but not always. ...Read more

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Could being underweight cause chest pains?

Could being underweight cause chest pains?

No: Unless this is obviously chest wall pain or the transient knife-like pain that many young people experience on breathing in, you need to get seen and have a cause identified. ...Read more

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Is amenorrhea caused by eating habits or being underweight?

Is amenorrhea caused by eating habits or being underweight?

If significant loss: Lack of menses when previously established (secondary amenorrhea) can result from many causes including depression, rapid change in weight (excess or loss) and various endocrine causes such as hypothyroidism, pcos (and of course pregnancy). If your eating habits is very selective and poor resulting in significant decrease in body mass index (bmi), then your menses may become erratic and spotty. ...Read more

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Can being underweight cause tiredness and exercise intolerance?

Can being underweight cause tiredness and exercise intolerance?

See below: Yes: Underweight might be secondary to or symptomatic of an underlying disease. Unexplained weight loss needs evaluation asap. Severely underweight individuals may have poor physical stamina and a weak immune system, leaving one open to infection. Malnutrition due to poor/inadeq intake, genetics, underlying mental or physical disease need to be ruled out. ...Read more

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Is it true that overweight children are likely to experience puberty later than their underweight peers?

Is it true that overweight children are likely to experience puberty later than their underweight peers?

Quite the opposite: Children who are overweight and and or obese are often early bloomers and go through puberty earlier than their normal weight peers. Some of the signals that lead to the start of puberty are tied to body weight, in particular a body weight or amount of body fat that signals the brain that the child is of an age when puberty should start. Some, but not all children who are underweight will have delayed growth and puberty. ...Read more

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My 9 yrs old son is extremely underweight how can I help him gain weight? What might be the cause of poor appetite?

My 9 yrs old son is extremely underweight how can I help him gain weight? What might be the cause of poor appetite?

See Pediatrician: He should get tested to be sure he does not have an endocrine or other problem. Dr can also help w/rx for appetite stimulant, if felt necessary, and provide you with guidance on protein supplementation (powder / liquid). ...Read more

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Can being underweight cause fatigue or exercise intolerance?

Can being underweight cause fatigue or exercise intolerance?

Yes: An individual needs enough energy stores during exercise to avoid fatigue or cramps. The body preferentially burns simple and complex carbohydrates first, then protein, then fat. If you don't have enough carbohydrate energy stores then protein (muscle) is broken down and then fat. The caveat is that some well trained underweight people don't have a problem but they have done extensive training. ...Read more

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What can I do to stop being underweight I'm 5'7 and weight 118, I need help so I can get my periods back cause im irregular?

What can I do to stop being underweight I'm 5'7 and weight 118, I need help so I can get my periods back cause im irregular?

The formula for: weight gain is to take in more calories than you burn. It is tempting to try and eat junk food which is high in fat and sugar to do this. Far better is to eat healthful foods, just in larger quantities than you normally would. Pick high quality fruits, vegetables, and meats, and high calorie but nutritious foods such as nuts and avocados. Hope this helps! ...Read more

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Doc said diffuse fatty liver, but not enough to cause enlargment. 6 mo follow up. No cirrhosis. I don't drink, underweight. Is it reversible? 27 yo

Doc said diffuse fatty liver, but not enough to cause enlargment. 6 mo follow up. No cirrhosis. I don't drink, underweight. Is it reversible? 27 yo

Fatty liver: We pay more attention to fatty livers than we did years ago. It's good that you abstain from alcohol and you should avoid high fat foods. I recommend that a hepatologist or gastroenterologist follow you to insure progress and avoid cirrhosis of the liver. ...Read more

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Can being underweight cause fatigue during exercise?

Can being underweight cause fatigue during exercise?

Maybe: If you are underweight because you are not getting enough nutrition, then yes. You can't get all the benefits of exercise if you are starving. If you are naturally thin, then it's probably not related. ...Read more

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I'm 22, 5' 9, normal health tests, I'm 54kg - 120pounds, am I underweight and can it cause heart problems or disease?

I'm 22, 5' 9, normal health tests, I'm 54kg - 120pounds, am I underweight and can it cause heart problems or disease?

Normal: Your height and weight measurements give you a bmi of approximately 17 which means you shouldn't have a problem with weight or your heart. You are also less likely to have other medical problems with your bmi. ...Read more

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Is there anything that can cause you to have low white blood cells and be underweight?

Is there anything that can cause you to have low white blood cells and be underweight?

Failure to thrive: At first glance I would say this indicates some type of malnutrition either due to some type of dietary deficiency or failure of the gut to absorb what you are eating. This needs careful attention by your primary doctor because there are so many more reasons for these 2 things to coexist and need to be investigated thoroughly. ...Read more

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Is it possible that being underweight, but having a high amount of body fat, could be a cause for high blood pressure?

Is it possible that being underweight, but having a high amount of body fat, could be a cause for high blood pressure?

Sometimes: There are many problems associated with elevation in body fat, including the risk for metabolic syndrome for which hypertension is part of the picture. This story is evolving, but the inflammation, especially in visceral fat may be associated with all elements of that syndrome. There are other reasons for hypertension not related to visceral or body fat, so discuss with a doctor your risks. ...Read more

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Can being underweight be the cause of my irregular periods?

Can being underweight be the cause of my irregular periods?

Absolutely: Once one reaches a certain percentage below your ideal body weight, all sorts of bodily functions begin to shut down for self-preservation. Even atheletes without an eating disorder may find this to be the case, and it nearly universal with anoerxia as well as starvation from other causes. ...Read more

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What causes intrauterine growth restriction and can it be treated? Does is mean the baby will definitely be underweight at birth and/or born early?

What causes intrauterine growth restriction and can it be treated? Does is mean the baby will definitely be underweight at birth and/or born early?

Many possibilities: This is a descriptive term rather than a diagnosis. IUGR can be a problem with babies placenta, a problem with their genetic or chromosome makeup, reflection of an infection during pregnancy, maternal health issues, and more. The outcome of such a pregnancy depends on the cause. Sometimes this can be discovered during pregnancy & sometimes not. ...Read more

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7 days of brown spotting starting cd18, what is the cause? I am underweight, sexually active. Pregnancy?

7 days of brown spotting starting cd18, what is the cause? I am underweight, sexually active. Pregnancy?

Brown = old blood: Irregular periods are one of the most common problems obgyns treat. If this is one time problem it usually resolves on its own. If this is a recurring problem you should be evaluated. Infections & hormonal changes can cause spotting. If there is a concern for pregnancy then do a home pregnancy test. There are many options available to help regulate the menstrual cycle. Schedule a visit. ...Read more