Three years ago, Esther Rohr and her husband decided to start thinking about pregnancy. The 26-year-old Oregon-based wedding photographer made small but intentional lifestyle changes—going to bed earlier, drinking more water and less alcohol, dialing in her fitness, loading up on protein, and taking supplements like beef organ capsules and Vitamin D3. They started charging their phones in the kitchen for better sleep and unplugging their Wi-Fi at night, because her research suggested it might affect cellular health. For the next year, she tried to lower the levels of mercury that showed up. Rohr and her husband completed two rounds of Dr. Daniel Pompa’s “cellular healing diet,” essentially a keto diet, and taking six to eight supplements each day.