I'm no expert - but I am 53 (in 3 weeks), post-menopausal (for 2 years), hypothyroid, have fibromyalgia, and am currently 185 - seeking 135 - so, yes - 50 pounds to lose. I started eating a primal diet at 206 pounds in November of 2011 - so my weight loss has been slow - but that's the best way to do it. A couple times I hit 178 - but bounced right back into the low 180s after a couple days. My body is stubborn to give up its fat stores. Eating strictly primal completely controls my fibromyalgia symptoms and makes life much more enjoyable!!!
I have found my best success doing a whole30, and VERY low carb. Although some people on this forum say VLC is detrimental to hypothyroidism. My doc has not cautioned me against it. If you are not yet familiar with whole30 here is link.
If you want a really good low impact, low cost and extremely convenient exercise option try this. You can get an online subscription for only $15 a month.
How long have you been doing a primal diet?
1. Love ME no matter what noises are screaming at me, or who is trying to tear me down.
2. Eat to heal
3. Move to live
4. Embrace today
5. Live with intention
6. Respect my body
7. Cultivate joy
8. Find my passion
9. Meditate on peace in my soul