Hypoglycemia symptoms may appear if the diet is deficient and could include dizziness, fatigue, headaches, irritability etc.
Leucine may benefit body composition.
Researchers from the University of Illinois Urbana-Champaign noted in a review that part of the benefit of a higher protein diet for weight loss may be due in part to increased intake of the branched chain amino acid (BCAA), leucine.1
A small study of five lean women compared to five women with abdominal obesity found lower rates of leucine release in obese women following a 22-hour fast, indicating preservation of body protein during weight loss. 2
1. Layman DK, Baum JI. “Dietary protein impact on glycemic control during weight loss.” J Nutr. 134, 4:968S-73S, 2004.
2. Patterson BW et al. “Regional muscle and adipose tissue amino acid metabolism in lean and obese women.” Am J Physiol Endocrinol Metab. 282, 4:E931-6, 2002.