- Gallbladder surgery
- Gallstones
- Gambling
- Gambling harm topics
- Ganglion
- Gastroenteritis
- Gastroenteritis in children
- Gastrointestinal topics
- Gastro-oesophageal reflux
- Gender diversity
- Gender diversity topics
- Gender dysphoria
- Genital herpes
- Genital warts
- GERD
- Giant cell arteritis (GCA)
- Giardia
- Gingivitis
- Glandular fever
- Glasses – infants & children
- Glaucoma
- Glue ear
- Gluten intolerance or sensitivity
- Glycaemic index (GI)
- Goitre
- Gonorrhoea
- GORD
- Gout
- Gout overview
- Grief & loss
- Grommets
- Guillain-Barre syndrome
- Gum conditions and care
- Gum disease