When hemoglobin A1c is inconsistent with fingerstick glucoses; A landmark study demonstrates improved muscle strength with urolithin A; Healthy diet can tamp down chronic pain; A mysterious new toxic compound detected in chlorinated water supplies; Long-term antibiotic use hikes risk for rheumatoid arthritis; Omega-3 scores vs. heart failure; Vegetarians consume more processed foods than those who consume meat; Best diet for prostate cancer.