I have always been thin. In my 30s I was around 135, which was a healthy weight for me. I've been the same weight since I was in high school. When I was pregnant I only gained 10 pounds with each pregnancy (I lost 10 pounds the first trimester from excessive morning sickness then struggled to gain that weight back the rest of the pregnancy).
I'm also the type of person who loses my appetite quickly when stressed or anxious. When the pandemic started I lost 25 pounds from the stress/anxiety. It took me about a year to gain that back. I'm now 115 pounds and 45 years old. I eat whatever I want but cannot gain weight. My BMI is 19, which it's always been. But I look too thin and skeletal, which is not a good look when you're 45.
My goal is to gain 25 pounds. But this seems like a challenging task because my appetite is pretty small in general, mainly due to the stress/anxiety of the pandemic. I drop weight really quickly when stressed/anxious because I can barely eat and it takes me months to gain it back.
I've had a colonoscopy and nothing is wrong there. Bloodwork is fine, thyroid is fine. My blood pressure is low. I have no health issues. I've been in therapy for over a year for this issue plus others, but have not found it helpful. This has been an issue that's affected me for decades, but it's gotten worse since the pandemic since the stress/anxiety of the pandemic makes it so I have very little appetite. Also I used to eat out a lot pre-pandemic which helped me keep my weight on, since the pandemic started we barely eat out, maybe once every 2 months, so that has caused a loss of calories.
I try to eat a lot of crap per day plus healthy fats (I eat 1-2 avocados per day) plus lots of cookies and whatever sweets I want. I drink only juice and water. If I stopped drinking juice I would drop a lot of weight, so I can't give up the juice. I cannot eat dairy though due to lactose intolerance so I can't have ice cream or other fattening dairy products. Even lactose-free cheese and dairy products are hard for me to tolerate.
For exercise I walk occasionally. I don't do anything else.
How can I gain more weight? When I see myself in a full-length mirror I'm shocked by how frail I look.