- Protein
- one of the main things food is made of, along with fats and carbohydrates. It's the body's building and repair material, used to make and maintain muscle, among much else. It comes from both animal foods and plant foods.
- Muscle loss with age
- the gradual, natural decline in muscle that most people experience as they get older, faster if the body isn't given good food and regular use. Doctors have a formal name for the more serious form of it, but the plain idea is what matters here.
- Complete protein
- a protein food that carries the full set of building blocks the body needs. Most animal foods are complete; soy is a plant example. A mixed diet across the day is complete even if single plant foods aren't.
- Incomplete protein
- a food a little short in one building block or another, true of most single plant foods. Not a problem in practice, because eating a variety of plants across the day fills in the gaps.
- Resistance / strength training
- movement that makes a muscle work against a force, body weight, a band, light weights, a soup can. The kind of exercise that best tells muscle to stick around. Walking, though excellent, doesn't do this on its own.
- Registered dietitian
- a qualified nutrition professional, more strictly trained and regulated than a general "nutritionist," who can build an eating plan around your specific health, conditions, and medications. The right person to set your personal protein plan.
- Kidney disease / reduced kidney function
- conditions in which the kidneys don't filter as well as they should. Because the kidneys handle byproducts of protein, people with these conditions often need to manage protein carefully with their medical team, sometimes eating less rather than more.
- Supplement (protein powder, shake, bar)
- a manufactured product delivering concentrated protein. Occasionally useful for genuine need and with professional advice, but not necessary for most people and no substitute for food.
- Batch cooking
- cooking a larger amount of something once and eating it across several days, often freezing part. A practical answer to cooking fatigue and cooking for one.