HealthTap Online Primary Care Doctors Accepting New Patients
Book a video visit
HealthTap
Telehealth
A member asked:

My boyfriend eats a lot and he is so thin (underweight)and when he eats food that should make you gain weight he lose weight.how this can be possible?

A doctor has provided 1 answer
Dr. Heidi Fowler answered

Specializes in Psychiatry

He is likely: Still growing, is possibly physically active? And most probably has a high metabolic rate. Take care.

Dr Altman agreed

Answered 3/27/2014

4.3k views

Thank

Related Questions

A member asked:

I am thin and I do not get fat whether I eat more. What should I do to gain weight? I am underweight.

A doctor has provided 1 answer

A member asked:

Im really skinny. 95 pounds at 16. How can I gain weight? I eat a lot but nothing seems to make me gain weight. Am i underweight for my age?

A doctor has provided 1 answer

A member asked:

I eat a lot but i dont gain any weight, my BMI tells me im underweight, what can i do to gain weight and look healthy?

A doctor has provided 1 answer

A member asked:

Why do I get bad gas, and abdominal pain sometimes after I eat: one medium size slice of Lou Malnati's deep dish custom made pizza? (I am underweight 5'8, and 110 pounds. Struggling to gain weight since February when suddenly started to lose weight?

A doctor has provided 1 answer

A member asked:

Can heart disease/liver disease occur on some1who eats fair lot of junk/sugar foods but it's around 9 pounds underweight? I Eat lots of veg n fruit 2

6 doctors weighed in across 2 answers

Sponsored Content
HealthTap Medical Group does not endorse products or services. Sponsored content revenues support our mission to make health information free and accessible to all.Learn more

People also searched for:

I am 26year old male weighing 50kg, am i underweight? If so, what food should I eat in order me to gain additional weight? Even in just a week.
If I am healthy weight even a little underweight is junk food still bad for me ? Even though I gain no weight.Still eat my veg & fruit
What are some healthy ways/food to gain weight? I exercise as well. My height is 56.5 and weight is 49 kgs. Is this normal or underweight? I get hungry but when i eat i get full really quickly. Any suggestions?
How can I gain weight? I've ate a lot of food everyday, almost more than 3 meals a day. But my BMI says i'm still underweight..
I'm underweight, I don't know what to do even if I eat healthy food I can't gain weight I'm lost plz help me :( food that make people gain weight ?

Telemedicine

Primary Care
Manage Your Conditions
Women's Health
Children's Health
Men's Health
Senior Health
Wellness, Prevention & Lifestyle
Sexual Health
Mental & Behavioral Health
Travel Medicine
Urgent Care
Ask your question
Didn't find what you're looking for?

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.

Ask your question

More of what we treat

Allergies
Antibiotics
Asthma
High Blood Pressure
Prescriptions
Type 2 Diabetes
Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.
HealthTap
HIPAA logo
HIPAASecure
Soc 2 Type 2 logo
SOC 2 Type 2Certified
JCAHO Accredited
JCAHOAccredited
Member App

Download HealthTap

Video visit and message your doctor

Member App QR Code
Play Store Member LinkApp Store Member Link

Questions?

+1 (888) 828-0841support@healthtap.com
LinkedInTwitter
HomeTermsPrivacyCookiesDMCAHealth TopicsDoctors DirectoryDoctor Q&A by Specialty
Copyright 2026 HealthTap, Inc.