1 CA500: Survival of the fittest is a tautology from the talk.origins index to creationist claims by Mark Ridley. 2  Is survival of the fittest a tautology by Don Lindsay.
What is healthy weight loss? It's natural for anyone trying to lose weight to want to lose it very quickly. But evidence shows that people who lose weight gradually and steadily (about 1 to 2 pounds per week) are more successful at keeping weight off. Healthy weight loss isn't just about a diet or program. It's about an ongoing lifestyle that includes long-term changes in daily eating and exercise habits.
For effective weight loss, women require 1,000 to 1,600 calories and most men need 1,200 to 1,600 calories per day. You can estimate your calorie needs for weight loss by multiplying your ideal body weight by 10. If your ideal weight is 120 pounds, eat about 1,200 calories per day to help reach that goal.