Recent research has indicated that sustainable weight loss is generally a result not of self-deprivation or adopting an extreme diet, but a healthy lifestyle that integrates a balanced diet, regular exercise, and a long-term approach. a. self-deprivation or adopting an extreme diet, but.
b. self-deprivation or the adoption of an extreme diet, but of.
c. self-deprivation or the adoption of an extreme diet, but.
d. depriving oneself or adopting an extreme diet, but.
e. depriving oneself or adopting an extreme diet, but that of.

Adopting a healthy lifestyle that integrates a balanced diet, regular exercise, and a long-term approach helps to sustainable weight loss is a true statement.

Explanation:

Sustainable weight loss is the key to a lifelong healthy body and mind. Adopting self-deprivation or following an extreme diet regime can provide temporary weight loss but only at the cost of the health. Such severe practices leads to nutritional imbalance and disorders like anorexia nervosa, anemia etc which might further deteriorate both the physical and mental health.  

By following a healthy well-balanced diet which provides all the essential nutrients and having light but frequent meals is a healthy way of eating rather than extreme diets or self-deprivation.

Following a regular exercise practice is prime important for a health body as it will help to oxidize the excess fat in the body and burn the extra calories.

Adopting a healthy lifestyle by following both healthy eating and regular exercises on a long-term approach to attain sustainable healthier weight loss.