There are many ways to which you can make money out of these niches. It doesn’t need to be through Adsense only. You can create product info and sell it, promote related affiliate products, or set it up to make money through CPA.

Acne
Adopting A Child
Allergies
Anger Management
Anti Aging
Anxiety & Panic Attacks
Aromatherapy
Arthritis
Beach Wedding
Bird Watching
Board Games
Boston Whaler
Boxing
Breeding Koi
Business Branding
Camping in France
Childhood Education
Chiropractic Care
Chiropractic Care
Coaching Business
College Guide
College scholarships
Computer Rentals
Cosmetic Surgery
Credit Repair
Detox Diet
Diabetes
Divorce
Dog Breeding
Dog Walking
Eczema Treatment
Essential Oils
Feng Shui
Fishing Boat
Flat Abs Diet
Foreclosure Auctions
Fruit Basket
Getting Government Grants
Goal setting
Golf
Green Smoothie
Handmade Gifts
Hawaii Honeymoon
Health Drinks
Help Desk Software
Inkjet
Instant arthritis relief
Ipod Touch
Journalism Career
Lake Tahoe Vacation
Latte Art
Lawn Mowers
Learn Spanish
Maldives Holiday
Massage therapy
Mixed Martial Arts
Mood Swings
Mountain Biking
Muscle building
Natural Skin Care
Online Job Search
Outsourcing
Patent Your Product or Idea
Penny Stocks
Pet Birds
Photoshop
Planning Your Wedding
Prevent Heart Disease
Quit Smoking
Real Estate Investing
Recipes
Relocation
Retirement Plans
Solar Water Heater
Speed Boats
Spy Gadgets
Steam Cleaners
Stress Management
Tattoos
Teeth Whitening
Time Management
Ultrasound Machines
Vacation Homes
Vegan foods
Veneers
Video Editing
Wedding Speeches
Weight Loss
Worm Farm
Yahoo Store
Yoga
Zumba