The term 'caveman-style, as a diet' is often referred to as the Paleo Diet. This diet is based on the idea that humans should eat the same foods that were eaten by our hunter-gatherer ancestors during the Paleolithic era. The diet consists of lean meats, fish, fruits, vegetables, nuts, and seeds. It excludes dairy products, grains, legumes, processed foods, and refined sugars. The Paleo Diet is believed to be beneficial for weight loss, improved energy levels, and overall health.