Dietitian Josie Porter only takes supplements if and when she needs them. Kimberly Espinel The dietitian Josie Porter only takes supplements if and when she needs them. Porter was no longer working out to failure so reasoned she didn't need to supplement creatine. She advocates for "sensible" supplement use and shifts her stack when her routine changes. Josie Porter is always reassessing her supplement stack. The dietitian and author of "How Not To Take Supplements," which promotes a food-f...