More strength is more muscle. More muscle is more calories burned, meaning a lower body fat. Strength training will make you build muscle and lose fat. But nutrition is also important.
Strength & Energy. You need energy – calories from food – for weight lifting and for daily activities.
Muscle Mass. Protein is necessary to build muscle & for muscle recovery. Nutrition can also minimize muscle breakdown.
Body Fat. Fat is emergency storage. Your body holds on to fat when you don’t eat enough calories or don’t eat enough fat.
Health. Testosterone levels, hydration, vitamins, minerals, fiber, … Your nutritional choices reflect your health.