If a back-to-basics approach sounds appealing
The general principle behind the Paleo diet is that modern humans have strayed too far from the diet we evolved eating, and all these newfangled processed foods are making us sick and fat. The Paleo diet—aka Paleolithic diet, ancestral diet, caveman diet, Stone Age diet—entails eating meat, fish, produce, nuts, and seeds. If your pre-agricultural ancestors could obtain a food by hunting and gathering, it’s on the menu.
Pros: Studies have shown that people who follow the Paleo diet tend to lose weight while improving their blood pressure, cholesterol, and glucose levels.
Cons: Most research on the Paleo diet has been limited to six months or fewer. Not only are most processed foods off-limits, but so are whole grains, dairy, legumes, and white potatoes. If you’re a vegetarian, this plan probably isn’t for you, says Geerts, because you’ll struggle to get an adequate variety of nutrients.