Joan Collins is worried about "creaky joints".
The 80-year-old actress takes Vitamin C tablets and other supplements regularly to make sure she avoids hip and knee problems that are associated with old age.
She explained: "I swear by Redoxon, a fizzy vitamin C tablet, which I have every day. I have friends who have suffered badly with their hips and their knees - Liza Minnelli, for instance, whom I have known for years and years - so I take liquid MSM [natural sulphur supplement] and, touch wood, I don't have creaky joints."
Joan is also keen to maintain her figure but doesn't like working out and has had less time to spare for fitness.
She added: "I am lucky that I am very fit. I try to excercise three times a week, although lately I have been far too busy. And I don't enjoy it at all. I hate it, in fact."
The 'Dynasty' actress intends to live life to the fullest and after reaching the milestone of 50, began thinking about how much time she had left.
She told Britain's HELLO! magazine: "You have to eat life or life will eat you. I think you only realise how short life is when you get past 50. Then you think, 'How much time do I have left?' I'm going to take advantage of life and do everything I want to do."

Nicole Kidman's husband leaves her secret love letters.
The 'Grace of Monaco' actress finds the attention she receives from Keith Urban "amazing" and says he is very romantic.
Asked if Keith is romantic, she told French newspaper Le Matin: "Totally! He leaves me a love letter every time we're apart. It's amazing to get that kind of attention from a man who loves you."
The 46-year-old star, who has daughters Sunday, five, and Faith, three, with the singer, along with children Connor, 19, and Isabella, 21, with ex-husband Tom Cruise, left Los Angeles for Nashville, Tennessee because she's a "country girl at heart."
Asked why she refuses to talk about Tom but is open about life with her new husband, she said: "Everything is different, simpler. I'm more confident within myself and calmer.
"It's no doubt due to the extra years that have made me more mature and surer of my beliefs and my choices."
Meanwhile, the star filmed 'Grace of Monaco' in the South of France and Keith and the girls were there as often as possible.
She added: "We try and combine work and pleasure. While I'm filming, my husband takes the children on a tour of the region. They go to the beach, the pool or visit tourist attractions."

Charlie Sims and Ferne McCann have picked out baby names.
'The Only Way Is Essex' stars, who have had an on/off relationship onscreen, have decided to rekindle their romance and properly commit to one another and are already planning a future together.
He said: "I'd love to have two little boys and a gorgeous little girl. I'd like to wait until I'm about 27, but Ferne's getting broody now so maybe we'll compromise. She's already got a list of baby names on her phone! We both really like Gabriel for a boy. But some of the names she shows me, I have to ask, 'Is that for a boy or girl?' I'm a family man at heart."
Ferne admits she's been broody and the pair even role play.
She added to Now magazine: "I've never been broody before but I suddenly love babies! We were in Tenerife recently and there were these kids playing with buckets and spades and it was too much. We even role play sometimes. The other day we were on the bed and Charlie said he had a bad back, so I jumped on top of him and was like 'Oh no, daddy's got a bad back!' "

Meera Syal would love to do a new series of 'Goodness Gracious Me'.
The hit comedy sketch show - which explored the lives of British-Asians living in the UK - will return for a one-off special to celebrate BBC Two's 50th anniversary, and Meera would love to get back together with co-stars Sanjeev Bhaskar and Nina Wadia for a new series.
She told the Radio Times: "We probably would [do it]. The material is there - India has changed so much and we've developed so much as a community. A lot of it depends on the response."
'Goodness Gracious Me' aired for three years from 1998 to 2001 and Meera, 52, married her co-star Sanjeev in 2005.
The couple also starred in 'The Kumars at No. 42' together, with Meera playing Sanjeev's grandmother Ummi.
The actress says their work together hasn't been affected by their marriage.
Meera said: "Other than we save on transport costs and both sets of wages go to the mortgage, nothing much as changed! Because of our son [Shaan] we tend to 'tag team', so it's quite nice to do something together."
'Goodness Gracious Me' airs tonight at 10pm on BBC Two.

John Krasinski gave Emily Blunt a diamond necklace for giving birth to their daughter.
The 'Edge of Tomorrow' actress, who welcomed their first child Hazel into the world in February, was thrilled when her husband gave her a delicate chain with a tiny letter 'H' encrusted with precious stones as a "push present."
Asked about the piece of jewellery, the 31-year-old star told The Sunday Telegraph's Stella magazine: "It was a gift [from Krasinski] for my little girl."
Emily is besotted with her daughter, whom she is raising in Ojai, California.
She said: "She is heaven; my heart sort of explodes. I'm wondering what we were doing without her, actually. I can't really remember. John and I spend a lot of time going, 'Isn't she cute? Oh my God, look at her, she's so cute... She just stares into your soul... Her eyes are denim blue. She looks like a combination of my mother and John's mother."
Although Emily, who recently started following a gluten-free diet, misses the pubs and "irreverence of the British," she has no plans to move back to her native country.
She said: "Our lives are here, all our friends are here."
But the brunette beauty, who got married at George Clooney's villa in Lake Como, Italy and recently holidayed in Mexico with Jennifer Aniston and Justin Theroux, claims she has a normal life.
She said: "I don't feel I lead a glamorous life. Most of the people we're friends with are people you can just hang out with."

Patrick Swayze's widow got remarried today (05.25.14).
Lisa Niemi, who was married to the 'Dirty Dancing' actor for 34 years before his death from pancreatic cancer in September 2009, tied the knot with jeweler Albert DePrisco in Palm Beach, Florida.
The couple - who started dating two years ago and got engaged on Christmas Eve last December (12.24.13) - exchanged vows in an intimate ceremony at The Mar-a-Lago Club in front of more than 50 guests.
The 'Beat Angel' actress, 57, told PEOPLE.com on Friday (05.23.14): "What I most look forward to on my wedding day is walking up, standing at our altar, and looking into his most incredible, twinkling eyes. I cannot think of a bigger treat than that."
The bride wore a wedding gown designed by Oscar de la Renta and admitted she was looking forward to celebrating with her guests at their reception.
She said: "I have some hilarious friends. I'm sure there will be some fun toasts! Later on we'll dance to everything from Michael Bublé and Steve Tyrell, to 70's classics, to current hits, with a big dash of romance thrown in."
Lisa previously admitted that she would like to find love again shortly after the first anniversary of 'Ghost' star Patrick's death.
She said: "I would love companionship love. Absolutely. I hope I'm not one of these women who never want to have another relationship. But who knows, that's another bridge I'll cross when I come to it. I may get there and go, I don't know. But I like to think that I can."

Kim Kardashian and Kanye West have reportedly arrived in Ireland for their honeymoon.
The newlyweds, who were married in front of 200 guests in a sunset ceremony at Forte di Belvedere in Florence, Italy on Saturday (24.05.14), are said to have flown into Cork via private jet this afternoon (25.05.14).
A source told the Irish Independent newspaper that the couple, whose 11-month-old daughter North West travelled to Paris with her grandmother, Kris Jenner, today, landed at Cork Airport at 3pm and were met by a "fleet of Mercedes limousines."
The 'Keeping Up with the Kardashians' star and her 36-year-old rapper husband are planning to enjoy five days at a "luxury private estate" in the country.
The brunette beauty enjoyed a low-key visit to Dublin in June 2012 to help Kanye celebrate his birthday while he was there on tour, and afterwards she wrote on her blog: "I've really enjoyed my time in Ireland."
Her family also previously discussed visiting the country on their reality TV show.
The couple were expected to be fly to Prague and attend another friend's nuptials before going on honeymoon.
Meanwhile, an insider has revealed that the 'New Slaves' hitmaker presented his bride with a custom-made diamond wedding band by Lorraine Schwartz to go with her 15-carat engagement ring.
A source told E! News that the celebrity jeweller also created a simple gold ring for him.
Kim walked down the aisle in a full-length white Givenchy gown with lace sleeves, but changed into a short beaded dress by Balmain during their reception.

Ashton Kutcher repaired a fan's car on Saturday night (05.24.14).
The 'Two and a Half Men' star, whose fiancée Mila Kunis is pregnant with their first child, came to the aid of a group of hikers after their car broke down in the Hollywood Hills in Los Angeles.
The driver told gossip website TMZ.com that his battery died while they were hiking, so they pushed it to a nearby street and began flagging down other cars in a bid to get someone to help them jump-start their vehicle.
The group were stunned when the 36-year-old actor spotted them and pulled over, offering to help.
Ashton told them that he had to drop his passenger, believed to have been 'Black Swan' star Mila, at home first, but quickly returned to the scene to assist them.
The source said that the heartthrob initially struggled to find his own battery, because it was located in the back of his Lexus, but eventually helped them get back on the road.
A member of the group captured a video of the road-side rescue, during which Ashton can be heard laughing and says: "I've never f****ing not been able to find a battery in a car."

Justin Bieber donated $545,000 to AIDS/HIV research this week.
The 20-year-old singer, who is "trying to be a better person" after several brushes with the law in recent months, reportedly shocked his fellow VIP guests, including Leonardo DiCaprio, when he made the generous pledge at the amfAR's 21st Cinema Against AIDS Gala in Antibes, France, on Thursday night (22.05.14).
A source told gossip website TMZ.com that the 'Heartbreaker' hitmaker "stunned" the star-studded crowd, which also included Heidi Klum, John Travolta and Sharon Stone, when he quietly agreed to match another wealthy guest's pledge of more than half a million dollars.
Organisers asked the Canadian star if he was serious about donating such a large amount of money and he quietly said yes, explaining that he felt very inspired to do something good.
'The Wolf of Wall Street' star Leonardo, 39, also raised $1 million at the event by auctioning off a trip to space with him in 2015.
A source previously said that Justin, who was arrested and charged with Driving Under the Influence (DUI), resisting arrest and possessing an invalid driver's licence earlier this year in Miami, is determined to get his life back on track.
The insider said: "He's making more of an effort to hang out with people who are positive influences in his life."

Kylie Jenner and Jaden Smith reportedly went public with their romance this weekend.
The 'Keeping Up with the Kardashians' star and the 'After Earth' actor - who previously insisted they are just good friends - were spotted "making out" at her half-sister Kim Kardashian and Kanye West's wedding on Saturday (24.05.14).
A source told E! News that the 15-year-old actor and the 16-year-old brunette beauty were all over each other at the newlyweds' reception at the Forte di Belvedere in Florence, Italy.
Jaden arrived in the picturesque city alone but returned to Paris with Kylie, her mother Kris Jenner, niece North West, half-sister Khloé Kardashian and sister, Kendall Jenner, via a private jet today (25.05.14).
The couple also spent a few days in the French capital together earlier this week and were seen arriving back at the George V hotel with tubs of Haagen-Dazs ice-cream after Kim and Kanye's extravagant pre-wedding celebration at the Palace of Versailles on Friday night (23.05.14).
An insider told UsMagazine.com that they were laughing and giggling as they entered the lobby together.
The young fashion designer previously insisted Jaden - whose parents are Will and Jada Pinkett Smith - was just one of her "best guy friends" and claimed they were not dating in December.
Kylie was one of the few members of the bridal party granted a plus-one.
Sources previously claimed that Khloé was banned from bringing her new boyfriend, French Montana, and Kim's half-brother Brody Jenner refused to make the trip from Los Angeles because his girlfriend, Kaitlynn Carter, wasn't invited.

Emma Thompson feels very lucky to have a rock solid relationship with Greg Wise.
The 'Saving Mr. Banks' actress, who has daughter Gaia, 14, and adopted son Tindyebwa Agaba, 26, with her husband of nine years, says he is "a great aesthetic pleasure" and admits she can't imagine her life without the actor, whom she met on the set of 'Sense and Sensibility' in 1995.
She said: "He is the only luxury I can't imagine ever being able to give up. Because he can cook, wash up, clean, entertain children, understand maths homework, put up shelves, take them down and put them up elsewhere and repair the little holes left behind, garden with a purpose, drive sensibly but very fast on motorways and lets me get on with my life."
The 55-year-old star recently put her career on hold to spend more time with her family.
She told the MailOnline: "I wanted to spend more time with my family. A year off was my birthday present to myself. I didn't actually act or write. I was just a mum. I taught drama at my daughter's school, cooked meals and had fun."
She added: "I highly recommend others to do the same if they can afford it."
Emma no longer believes that it's possible to always juggle a career and parenthood.
She said: "Sometimes in life you'll have some things, at other times you will have other things. You don't need it all at once, it's not good for you. Motherhood is a full-time job.
"The only way I could have continued working would have been by delegating the running of the home to other people. I never wanted to do this as I find motherhood profoundly enjoyable."

Emma Watson graduated from Brown University today (25.05.14).
The 'Harry Potter' actress, who enrolled in the prestigious Ivy League school in 2009, donned a black gown and cap to receive her English literature degree at a commencement ceremony on the main campus in Providence, Rhode Island.
The 24-year-old actress added some extra glamour to the traditional graduation attire by applying bright red lipstick before sharing a picture of herself looking happy and relaxed on Twitter.
Emma previously praised her classmates for giving her an opportunity to experience life away from the spotlight.
She previously said: "I've never even been asked for an autograph on campus. I threw a party for nearly 100 students and not a single person put a photo on Facebook."
And the brunette beauty also revealed she was planning to get "very drunk" after struggling to balance her education and Hollywood career over the past five years, during which she spent one year studying abroad in Oxford University in England.
In an interview last year, the 'Noah' star said: "People told me it wasn't possible. I kept saying, 'I don't care.' This is what I want. And graduating will, for me, be really symbolic of all of that."
She added: "I will be there. And I will be throwing a huge party. And getting very drunk."
The British star also insisted she is still very ambitious.
She said: "I've got so much left to do and to prove."