I really don't know anything about Atkins. My diet is:
1. Eat only real foods. Real foods do not have a list of ingredients
2. Eliminate all processed foods with chemicals
3. Eliminate refined sugars, esp. HFCS
4. Eliminate all grains.
So I suggest you eat lots of natural foods - meats, dairy, eggs, vegetables, legumes. I eat fruit, but never drink fruit juice (This concentrates the sugars.) I only eat hormone free, grass fed meats. Free range chicken and eggs. Natural foods. I eat everything I want, and as I mentioned, I went from 215 to 170, and dropped 4 inches of belly fat in 2 years. My bp is 110/65, and I have a resting heart rate of 53. I do work out (racquetball) 6 days a week.
I agree on the natural foods part. And I blend fruit, never juice it. But no way am I eating meats, dairy and eggs. However plenty of whole grains is perfectly fine for me.
How old are you? The cholesterol that builds up in your arteries usually takes over when you hit your 50’s.