Various economic studies support these claims, but not always to the degree the trade groups report.

How about a study that analyses what population the earth can support.

Many studies support the value of a healthy lifestyle as above.

More recent studies not included in the review support the negative findings.

Some studies support it, while others show little or no effect when compared with placebo.

A recent study of primary school practice across the arts supports this view.

Many studies support the idea that therapy can be a powerful treatment for depression.

Psychological studies do not support this view or, at best, offered mixed results.

However modern genetic studies do not support to these writings.

He has no testing or studies to support his theory.