Is cardio or strength training better for weight loss?

Direct answer

Both can support weight loss, but they do it in different ways.

Explanation

Cardio is a useful way to increase your overall activity and energy expenditure, while also improving cardiovascular fitness. This could include walking, running, cycling, swimming or plenty of other activities, performed at different levels of intensity depending on your fitness and goals.

Strength training can also contribute to your overall energy expenditure, while helping you build or maintain muscle. Building muscle increases your metabolic rate, meaning your body requires more energy to maintain that tissue. Maintaining muscle can also be particularly valuable while losing weight, helping you retain strength and improve or maintain your body composition as your weight changes.

Neither strength training nor cardio guarantees weight loss on its own. Your nutrition and overall activity still need to create an energy deficit over time.