Tom Arnold lost 75 pounds after suffering a stroke. The 63-year-old actor – who has children Jax, six, and nine-year-old Quinn with ex-wife Ashley Groussman – explained he suffered a “mini-stroke” when taking care of the kids and was spurred on to make “big changes” to his lifestyle as a result. He said: “It all started in January. I was giving the kids a bath and turned around to count to 10 when suddenly my vision in my right eye went black as if there was a curtain coming down over my eye. I had a mini-stroke. I checked into the hospital for the 24-hour stroke protocol. As a 63-year-old sin…