My husband is 73 years old and over the years his stomach has gradually filled out. He's fairly active putting up sheds, digging the garden etc, He seems fairly fit even though he smokes about 5 cigarettes a day. We do not over indulge in eating, usually having either abacon sandwich, or porridge, boiled egg for breakfast and then having a meal round about 4 o'clock and then nothing else but a cup of tea and a biscuit before bedtime.
His father became the same shape and was pretty healthy right up until he died aged 93.
Is it a genetic thing?