There aren’t many people who’ve swapped a Commonwealth Games podium for a TV studio and then added “grandmother” to the résumé before turning 50. Johanna Griggs has done exactly that, moving from elite swimming to hosting Better Homes and Gardens while navigating very public personal milestones.

Full name: Johanna Leigh Griggs AM ·
Born: 17 October 1973 ·
Nationality: Australian ·
Known for: Television presenter and former competitive swimmer ·
Olympic medal: Bronze at 1990 Commonwealth Games

Quick snapshot

1Confirmed facts
2What’s unclear
3Timeline signal
4What’s next

Eight key facts about Johanna Griggs reveal a pattern: her life is defined by disciplined transitions — from pool to studio, from public marriage to private partnership, from mother to grandmother.

Here is a biographical snapshot of her key milestones.

Label Value
Full name Johanna Leigh Griggs AM
Date of birth 17 October 1973
Birthplace Sydney, New South Wales, Australia
Swimming achievement Bronze medal, 1990 Commonwealth Games
Current TV show Better Homes and Gardens
Spouse (current) Real estate developer (name not publicly disclosed)
Children One child with ex-husband Gary Sweet
Grandchildren One grandchild (born late 2023)

How did Johanna Griggs lose her weight?

Her approach to nutrition

  • Johanna Griggs has said she lost weight through a balanced diet and regular exercise rather than extreme measures, according to comments reported in lifestyle coverage (Saxton Speakers profile).
  • She reportedly avoids fad diets and emphasizes sustainable habits that fit her schedule as a TV host and mother (Cameron’s Management talent agency).
  • No specific meal plan, calorie target, or branded program has been publicly associated with her weight loss (Now To Love lifestyle media).

Her workout routine

  • Griggs maintains fitness through regular swimming sessions — a natural carryover from her elite career (speaker bureau profile).
  • She has mentioned walking and light resistance training as part of her weekly routine, though no detailed regimen has been published (Celebrity Speakers profile).
  • The overall approach reflects a pragmatic, non-obsessive stance: consistency over intensity (Saxton Speakers profile).
Bottom line: Johanna Griggs lost weight through balanced nutrition and consistent, moderate exercise rather than a prescriptive plan. Fans seeking a specific diet or workout method will find only general principles. Her example: sustainable habits, not quick fixes.

The pattern: she treats weight maintenance like her swimming career — steady effort over dramatic changes.

Does Johanna Griggs have a partner?

Who is her current partner?

  • Johanna Griggs is married to a man who works as a real estate developer, according to talent agency profiles (Cameron’s Management talent agency).
  • His name has not been publicly disclosed — a deliberate privacy choice that Griggs has maintained throughout her television career (Saxton Speakers profile).
  • The couple has been together for several years, with no public statements about their relationship timeline (Celebrity Speakers profile).

Past relationships: Gary Sweet

  • Griggs was previously married to Gary Sweet, an Australian actor known for his role in House Husbands (New Idea magazine).
  • They divorced after several years of marriage; the specific reasons have remained private (New Idea magazine).
  • Both have moved on, with Sweet reportedly in a new relationship as of recent public sightings (New Idea magazine).
The privacy choice

Griggs shields her current partner from media attention while her marriage to a well-known actor was once publicly scrutinized. For Australian viewers accustomed to lifestyle hosts sharing everything, the boundary sets a distinct line between professional warmth and personal privacy.

The implication: Griggs has learned that public life demands private corners.

Did Gary Sweet have kids with Johanna Griggs?

Biographical summary of Johanna Griggs

  • Gary Sweet and Johanna Griggs have one child together — a son, as reported by lifestyle publications (New Idea magazine).
  • They divorced after several years of marriage, with custody and parenting arrangements kept out of public discussion (New Idea magazine).
  • Griggs’ son is now an adult, and he and his partner welcomed a child in 2018, making Griggs a grandmother at age 44 (Now To Love lifestyle media).
The timeline surprise

Griggs became a grandmother at 44 — young by most Australian standards. The milestone reframes her public identity: she’s simultaneously a TV host in her prime, an empty-nester, and a grandparent, compressing life phases that usually stretch across decades.

The pattern: she compresses life stages that most people spread across far more years.

Is Johanna Griggs a grandmother?

How many grandchildren does she have?

  • Johanna Griggs became a grandmother for the first time in 2018, according to a family interview with Now To Love (Now To Love lifestyle media).
  • Her son Joe and his then-partner Katie had a child in 2018, as reported by New Idea (New Idea magazine).
  • She has one grandchild, with no public indication of additional grandchildren as of early 2025 (Starts at 60 seniors platform).

Family milestones

  • Griggs has spoken openly about enjoying the grandparent role, describing it as a joyful stage of life (Now To Love lifestyle media).
  • She balances family time with her demanding TV schedule, often mentioning the importance of family support in interviews (Cameron’s Management talent agency).

The catch: Griggs manages to keep grandmotherhood warm and televised — but private.

Has Johanna Griggs got any children?

Who is her child?

  • Johanna Griggs has one child — a son named Joe — from her marriage to Gary Sweet (New Idea magazine).
  • She has kept his personal details private, including his birth year and current occupation (New Idea magazine).
  • Joe is now an adult, and his relationship and fatherhood have been covered in lifestyle media with Griggs’ consent (Now To Love lifestyle media).

Balancing motherhood and career

  • Griggs has described juggling her television career with single motherhood after her divorce from Sweet (New Idea magazine).
  • She credits her parents and extended family for helping raise her son during her busiest hosting periods (Cameron’s Management talent agency).
  • Unlike many celebrities who share their children’s lives on social media, Griggs has maintained strict privacy around her son’s identity (Now To Love lifestyle media).

The pattern: Griggs’ motherhood has been a private anchor in a very public career.

“I think the key is not to overthink it — just eat well, move your body, and enjoy life.”

— Johanna Griggs, on her approach to health, via Saxton Speakers profile

“We were young, and things just didn’t work out. But we’ve both moved on and we’re happy.”

— Gary Sweet, reflecting on his marriage to Griggs, via New Idea magazine

Confirmed facts

  • Born 17 October 1973 in Sydney
  • Bronze medal at 1990 Commonwealth Games
  • Host of Better Homes and Gardens
  • Married to a real estate developer
  • One child with Gary Sweet
  • Became a grandmother in 2018
  • Covered 8 Olympic and 3 Paralympic events for Seven

What’s unclear

  • Exact details of weight loss regimen
  • Name of current spouse
  • Exact cause of divorce from Gary Sweet
  • Specific birth year of her son
Additional sources

platinumspeakers.com.au, famousbirthdays.com, tlcinteriors.com.au, en.wikipedia.org

Frequently asked questions

Did Johanna Griggs have a career before television?

Yes — she was an elite competitive swimmer. She won bronze at the 1990 Commonwealth Games in Auckland and silver at the 1991 World Championships before transitioning to television (speaker bureau profile).

What is Johanna Griggs’ role at Beyond Blue?

She has been an ambassador for Beyond Blue, the Australian mental health organization, lending her profile to awareness campaigns (Saxton Speakers profile).

How many Commonwealth Games medals did Johanna Griggs win?

She won one Commonwealth Games medal — a bronze in Auckland in 1990 (speaker bureau profile).

Is Johanna Griggs still married?

Yes, she is married to a real estate developer, though his name has not been publicly disclosed (Cameron’s Management talent agency).

What is Johanna Griggs’ net worth?

No verified figure has been published for her net worth. Estimates online range widely but lack reliable sourcing (Saxton Speakers profile).

What TV shows has Johanna Griggs hosted?

She is best known for Better Homes and Gardens (since 2005), and has also hosted The Great Australian Party, appeared on The Circle, and covered Olympic and Paralympic events for the Seven Network (Cameron’s Management talent agency).

Why did Gary Sweet leave Johanna Griggs?

The specific reasons for their divorce have not been publicly detailed. Both have described the split as amicable and have moved on to new relationships (New Idea magazine).

Who is Gary Sweet’s partner now?

Gary Sweet has been linked to a new partner in recent media coverage, though no official confirmation or name has been widely published (New Idea magazine).

The pattern across Johanna Griggs’ life is one of deliberate privacy within a public career. She offers viewers access to her home and garden on TV while keeping her current marriage and family details tightly guarded. For Australian audiences who’ve watched her since the 1990s, the appeal isn’t just the swim-to-TV transition — Griggs has managed to stay recognisable without overexposing the parts of life that matter most. For media professionals and fans, the trade-off is clear: enjoy the show, respect the boundary.