What do systematic reviews say?

Dietary advice plus supplements vs no advice

Dietary advice plus supplements if required showed no clear difference in complications compared with no advice (low certainty).

• Dietary advice with or without oral nutritional supplements for disease‐related malnutrition in adults 2021 · Cochrane Headline outcomes only
  RR 0.56 [0.22, 1.46]
  2 studies · 280 participants
  Low