Hi I’m keen to know is this a sudden change that you are noticing now or it has been the same through 40yrs? Also if you can relate to your mothers or fathers side do any of them or their siblings have a similar body structure?? That can indicate genetics which means we can definitely try to improve your diet pattern but your metabolism must be so good that your body has never been able to store much fats if it’s in your genes

You need to take high protein diet.please ask me directly for personalized diet plan for you.

First you need investigation of your body profile. Need weight gain with diet and exercise which helps you to increase your muscle mass.

Healthy morning, You need a high calorie, high protein diet .

Gud morning pls connect through app.

You need to do some weight training and see the protein and carbs in diet with your blood profile To help you better