follow a diet
stick to a diet
keep track of one's diet

Not everyone following a diet is trying to lose weight.

Patients who take it must also follow a diet to get results.

I can follow a diet to the letter but it goes to pot at night.

Using condoms is like having to follow a diet all year round; sometimes, you want to give in.

But by following a diet and exercise plan, this situation can easily be reversed.

Coming into this year, Sainz had never followed a diet before.

Mithun started weight training and following a diet from the year 2002.

The basket appears after several of us commit to follow a diet.

Both are supposed to be prescribed only to people following a diet and exercise regime.

Some people, however, follow a diet to gain weight (usually in the form of muscle).

She’s very bright but is consumed with this illness which took hold following a diet that got out of control.

Taking a cruise to follow a diet may seem like a study in conflicting purposes.

Follow a diet moderately low in saturated fat and cholesterol.

Both groups also followed a diet and exercise regimen.

Usually that 'system' was using the product but also following a diet and doing some sort of aerobic activity."

All the participants followed a diet of about 500 fewer calories than they normally consumed.

Sometimes to follow a diet strictly can cause anorexia.

By simply following a diet or exercise regimen, people may be able to avoid developing diseases they are susceptible to.

I really try to follow a diet.

Avoid constipation; follow a diet with plenty of fibre.

It may be hard for some people to follow a diet that is too restrictive, especially when it limits foods they love.

Last diet he tried: "I never followed a diet.

In the study, 1,700 participants followed a diet rich in fruits, vegetables and low-fat dairy.

He follows a diet which deliberately excludes things he likes to eat or drink.

Pupils at the school followed a diet completely free of animal products, known today as a vegan diet.