The purpose of this study is to examine the efficacy of an internet based diet plus a regular dedicated dietary coach (ID group) versus clinic visit based weight loss program (CD group) on weight loss in obese and overweight female adults.

Inclusion Criteria:

• Must be female
• Must be 18-45 years of age.
• Must have Body mass index (BMI) between 27-35 kg/ m².
• Must be able to have moderate exercise.
• Must be interested to have weight loss.
• Have access to a personal computer and the Internet

Exclusion Criteria:

• Pregnancy or lactation during the previous 6 months, or planned pregnancy in the next six months.
• Taking medications that could affect metabolism or change body weight.
• Report heart problems, chest pain, and cancer within the last five years.
• Smoking
• Menopause
• Diagnosis of any chronic disease such as fatty liver, cancer, chemo/radio therapy, heart disease, immune compromised conditions, abnormal thyroid hormone level.