There can be many reasons for weight loss and you can read more about this on our website here.
I wonder if the person you are enquiring for has spoken to her specialist team or GP about her weight loss. If she hasn't it would be best to make an appointment so that they can assess her. They can also refer her to a dietician if needed who can offer specific dietary advice.
We have some tips on putting on weight and supplements at this link and some information on high calorie drinks here.
I hope this is of use. Please get back to us if you need any more information or support. You may find it helpful to talk things through with one of the nurses on our helpline. The number to call is Freephone 0808 800 4040 and the lines are open from 9am till 5pm Monday to Friday.
