@colapyrus .. Jan, personally I have never been told by a doctor which it is .. chicken/egg thing .. but I think every single one of has had a weight loss issue .. I personally lost 18% of my body weight . and never really ever gained it all back .. even though I have been MAC "stable" since May 2014. I don't know if it is an age thing .. I am now 73 .. or a carry over .. but I still don't have a big appetite. I still "eat to live" rather than live to eat as my husband says! So my opinion is just don't worry about it .. eat as healthy as you can .. take the good advice of members here on the Forum if you are losing weight .. from my File Cabinet:

Member @21042, Kathi Weight loss: skim mild, Carnation Instant Breakfast and mix a scoop of ice cream in it daily. She said when she was in the hospital in St. Louis, she was told to do that.

Member @pamelasc1, Pamela, I drank Ensure each day just to be sure I was getting some protein.

Katherine: I was told because of weight loss to have a protein shake made with yogurt each morning. I was told a good brand was: NOW UNFLAVORED 100% WHEY PROTEIN ISOLATE 10 LB. If you google it you can find where the best price to purchase is. Personally I put about 1/3 yogurt, big scoop of the Now protein powder, a bit of sweetener, fill my WONDERFUL Hamilton Beach Blender the rest of the way to the top with frozen fruit and blend away. (https://smile.amazon.com/Hamilton-Beach-51101BA-Personal-Blender/dp/B00KVZ27UA/ref=sr_1_1_s_it?s=hpc&ie=UTF8&qid=1466295509&sr=1-1&keywords=hamilton+beach+blender )
I get big bags of mixed berries, mangos, pineapple, peaches .. really whatever you like .. but blueberries are really healthy. It is a good way to get that healthy yogurt into your diet.

Hope the above helps just a little bit Jan! Hugs! Katherine