How much weight can I lose in 5 months?

With exercise and the right diet, you could lose 10 lbs every month. A good plan would be:

Breakfast: low fat milk on cooked 9-grain cereal (from health food store), mixed with cooked oatmeal and wheat bran. Add some nuts and berries. Drink hot Ovaltine.

Lunch: Egg, tuna or turkey sandwich on whole grain bread with bean or alfalfa sprouts and yogurt w/fruit. If you had meat loaf for dinner, bring a meat loaf sandwich (NO mayo). On cold days, a squatty thermos of hot chili, split peas with ham or beef stew.

Snacks: Fresh (not canned) fruit: banana, orange, apple, kiwi, grapes, peach, nectarine, cherries, pineapple. No chips and nothing ever from a vending machine.

Dinner: salad with white meat chicken and fresh (not canned) veggies: tomatoes, 2 kinds of lettuce, 2 kinds of shredded cabbage, shredded or sliced carrots, alfalfa or bean sprouts, zucchini, hard boiled eggs, brussels sprouts, broccoli, cauliflower, tofu, cottage cheese...Instead of dressing, squeeze 1/4 tomato over it.

Or homemade bean/vegetable soups; great way to recycle leftovers.

Or omelet: In blender, whip together eggs, tofu, cottage cheese, onions, garlic powder. Cook with mushrooms, chopped tomatoes.

Foods to avoid: junk food, pastries, desserts, sugar, salty foods, syrup (even canned fruit in syrup), peanut butter, fatty/greasy foods (pork, wieners, chops, bacon, salami, pizza), pasta, potatoes, white bread, rice, canned veggies, ice cream, fast food, soda, chips. And of course no tobacco or alcohol in any form. Both of those add wrinkles and destroy your brain. No oil except olive and mac nut. Coffee also rots your brain.

To keep your skin clear, drink water. Veg. juice is good too. But not canned juice (too much sugar.)

Join a gym; they have all the equipment and staff to show you how to use it to get the look you want to achieve. Much cheaper than buying your own equipment. Also hiking, biking, jogging, bowling, swimming, badminton, tennis...

If you lack energy to exercise, take stress B vitamins.

To lose weight, try an appetite suppressant.