All youth need calcium to build peak (maximum) bone mass during their early years of life. Low calcium intake is one important factor in the development of osteoporosis, a disease in which bone density decreases and leads to weak bones and future fractures. Women have a greater risk than men of developing osteoporosis. During adolescence and early adulthood, women should include good food sources of calcium in their diets This is when bone growth is occurring and calcium is being deposited into the bone. This occurs in women until they are 30 to 35 years of age. Women 25 to 50 years of age should have 1,000 mg of calcium each day, while women near or past menopause should have 1,200 mg of calcium daily if they are taking estrogen replacement therapy; otherwise, 1,500 mg per day is recommended. Women older than 65 years of age should have 1,500 mg per day.
Yes, regular weight training will result in increased muscle mass. However, there is a certain type of training necessary to achieve these gains in size, training that involves heavy resistance and volume. By keeping the weight at about 40 to 50% of maximum effort and increasing repetitions for a cardiovascular effect, you will notice tone, not bulk.
Research has consistently shown that the elliptical, although easiest on joints, is worse than the treadmill, stationary bicycle, and rowing machine (not to mention activities such as swimming and intense hiking) when it comes to elevating heart rate and burning body fat. This is due to the fact that movement on these machines relies heavily on momentum and not resistance or the propelling of one's bodyweight. All these months of elliptical training has yielded mediocre results, and now you know why.
To achieve these goals, cut down on saturated fat from animal products (meat and the skin of poultry, whole-fat dairy products, and certain vegetable foods — palm oil, palm kernel oil, cocoa butter, and coconut). And it's just as important to reduce your consumption of trans fatty acids, the partially hydrogenated vegetable oils found in stick margarine, fried foods, and many commercially baked goods and snack foods.
It's a cliché, to be sure, but a balanced diet is the key to good nutrition and good health. Following that diet, however, isn't always that easy. One challenge is that women often feel too busy to eat healthfully, and it's often easier to pick up fast food than to prepare a healthy meal at home. But fast food is usually high in fat and calories and low in other nutrients, which can seriously affect your health. At the other extreme, a multimillion dollar industry is focused on telling women that being fit means being thin and that dieting is part of good nutrition.
Both your nutritional needs (the food and water) and your metabolism (how fast your body converts food to energy) change at this age. Your metabolism gets slower. Women lose about half a pound of muscle per year starting around the age of 40. That makes losing weight even more difficult. Some of the changes women experience are due to decreased hormones, reduced activity level, and medical conditions.
However, 30% is still a lot of fat for one serving, so considered absolute values like how many grams of fat, carbohydrates, protein, etc. are consumed instead of relative values like "50% less fat." Additionally, reaching fitness goals is largely about calorie intake. More body fat and unwanted weight will be gained by eating 500 calories of a low-fat item than by eating 100 calories of a high-fat item, so keep this in mind.